A less expensive and less bulky alternative to traditional dry bags. You can squash these into spots ordinary heavy dry bags won't go. Fits into little corners of a sea kayak or light enough to take backpacking or adventure traveling. Suitable to keep contents dry in any wet situation where the bag is not submerged. PRODUCT DETAILS Lightweight 70D nylon with fully taped seams 10,000mm waterhead, lightweight durable nylon Polyurethane coating with white pigment for greater interior visibility Hypalon roll top closure D-ring attachment point at buckle Round base on all sizes Use backpacking, cycle touring, paddling, general boating Proper Use Any roll-top dry sack must be closed properly to ensure water can't get in. Begin by folding the Hypalon strip down first and be sure to have at least three rolls before closing the buckle. Avoid contact with sharp objects or subjecting the sack to high abrasion, as this could compromise the waterproof fabric. Like all manufacturers of roll-top, fabric dry sacks, Sea to Summit recommends that sensitive electronic devices be 'double bagged' (i.e. putting electronics inside one dry sack then placing this inside a second dry sack). For maximum protection, the use of a waterproof hard case should be considered. Not intended for situations where dry sack will be submerged under water.
A less expensive and less bulky alternative to traditional dry bags. You can squash these into spots ordinary heavy dry bags won't go. Fits into little corners of a sea kayak or light enough to take backpacking or adventure traveling. Suitable to keep contents dry in any wet situation where the bag is not submerged. PRODUCT DETAILS Lightweight 70D nylon with fully taped seams 10,000mm waterhead, lightweight durable nylon Polyurethane coating with white pigment for greater interior visibility Hypalon roll top closure D-ring attachment point at buckle Round base on all sizes Use backpacking, cycle touring, paddling, general boating Proper Use Any roll-top dry sack must be closed properly to ensure water can't get in. Begin by folding the Hypalon strip down first and be sure to have at least three rolls before closing the buckle. Avoid contact with sharp objects or subjecting the sack to high abrasion, as this could compromise the waterproof fabric. Like all manufacturers of roll-top, fabric dry sacks, Sea to Summit recommends that sensitive electronic devices be 'double bagged' (i.e. putting electronics inside one dry sack then placing this inside a second dry sack). For maximum protection, the use of a waterproof hard case should be considered. Not intended for situations where dry sack will be submerged under water.
in 7 offers
last seen 11 May 2026
The lowest price we last saw for Sea to Summit Lightweight 4L Dry Sack - Green was $14.82 at Davo's Tackle, compared across 7 retailers (last seen 11 May 2026). Prices may have changed since.
Sea to Summit Lightweight 4L Dry Sack - Green
A less expensive and less bulky alternative to traditional dry bags. You can squash these into spots ordinary heavy dry bags won't go. Fits into little corners of a sea kayak or light enough to take backpacking or adventure traveling. Suitable to keep contents dry in any wet situation where the bag is not submerged. PRODUCT DETAILS Lightweight 70D nylon with fully taped seams 10,000mm waterhead, lightweight durable nylon Polyurethane coating with white pigment for greater interior visibility Hypalon roll top closure D-ring attachment point at buckle Round base on all sizes Use backpacking, cycle touring, paddling, general boating Proper Use Any roll-top dry sack must be closed properly to ensure water can't get in. Begin by folding the Hypalon strip down first and be sure to have at least three rolls before closing the buckle. Avoid contact with sharp objects or subjecting the sack to high abrasion, as this could compromise the waterproof fabric. Like all manufacturers of roll-top, fabric dry sacks, Sea to Summit recommends that sensitive electronic devices be 'double bagged' (i.e. putting electronics inside one dry sack then placing this inside a second dry sack). For maximum protection, the use of a waterproof hard case should be considered. Not intended for situations where dry sack will be submerged under water.
A less expensive and less bulky alternative to traditional dry bags. You can squash these into spots ordinary heavy dry bags won't go. Fits into little corners of a sea kayak or light enough to take backpacking or adventure traveling. Suitable to keep contents dry in any wet situation where the bag is not submerged. PRODUCT DETAILS Lightweight 70D nylon with fully taped seams 10,000mm waterhead, lightweight durable nylon Polyurethane coating with white pigment for greater interior visibility Hypalon roll top closure D-ring attachment point at buckle Round base on all sizes Use backpacking, cycle touring, paddling, general boating Proper Use Any roll-top dry sack must be closed properly to ensure water can't get in. Begin by folding the Hypalon strip down first and be sure to have at least three rolls before closing the buckle. Avoid contact with sharp objects or subjecting the sack to high abrasion, as this could compromise the waterproof fabric. Like all manufacturers of roll-top, fabric dry sacks, Sea to Summit recommends that sensitive electronic devices be 'double bagged' (i.e. putting electronics inside one dry sack then placing this inside a second dry sack). For maximum protection, the use of a waterproof hard case should be considered. Not intended for situations where dry sack will be submerged under water.
The all-time low we recorded was $14.82 on 1 Dec 2025.
Prices last updated 11 May 2026.
Last updated at 11/05/2026 05:15:58
Sea To Summit Lightweight Waterproof Dry Storage Travel Sack Bag, 4L / Apple Green
Delivery $11.99
Sea To Summit Dry Sack #4 Litre Green
Free delivery between 15–20 May
Dry Sack 4 Litre Apple Green by SEA TO SUMMIT
Delivery between 18–19 May $13.91
Dry Sack 4 Litre Apple Green by SEA TO SUMMIT
Delivery $13.25
Dry Sack 4 Litre Apple Green by SEA TO SUMMIT
Delivery between 14–20 May $13.25
Lightweight 70D Dry Sack
Delivery $9.95
Sea to Summit Sea To Summit Dry Sack 4L Apple Green
Delivery $19.99
originally posted on anacondastores.com
Very lightweight and things stuff into the bag nicely. For my purposes this time I only required the 8L. I like it very much. I have several other sizes in these for larger items. I like Sea to Summit products and have most of what they make. The Big River bag is more for kayaking, not so much for backpacking and hiking as it is much heavier, but the lightweight dry sacks still keep your items very dry. Highly recommend them and all Sea to Summit products. Get yourself an 8L and even 20L. You won’t be disappointed.
originally posted on digitec.ch
I bought this dry sack to bring on trips just in case. Its thin material makes it very convenient to pack. Also, if you aren't putting a lot of things inside it, you can fold it to a small form factor.Its black color is inconspicuous, allowing us to put our valuables, like phones and wallets, and swim with them, without attracting any attention.It is thinner than the bags I usually use for my daily Aareschwumm. I don't know how well it would endure under heavier use. But for the occasional swim during the occasional beach holiday, it's perfect.
originally posted on seatosummitusa.com
Purchased two 2L drybags for my wife and I, to hold our smart phones, wallets, keys etc. We normally store our drybags in the day hatch of our Kayaks. While practicing our rolls, it’s understandable that some water will get into our day hatches. That’s expected. What wasn’t expected was that water got into my drybag, soaking my phone. Jury is still out on whether I’ll be able to get the phone back up and running. If not……$500 gone.After getting home I did a leak test on both bags. Filled them up with water to see if any would leak out. Unfortunately, both leaked like a sieve. These bags are NOT waterproof, as water permeated through the fabric, and not the seams. Totally disappointed with this product. Will not buy another. BTW, these drybags were only purchased 2 ... MorePurchased two 2L drybags for my wife and I, to hold our smart phones, wallets, keys etc. We normally store our drybags in the day hatch of our Kayaks. While practicing our rolls, it’s understandable that some water will get into our day hatches. That’s expected. What wasn’t expected was that water got into my drybag, soaking my phone. Jury is still out on whether I’ll be able to get the phone back up and running. If not……$500 gone.After getting home I did a leak test on both bags. Filled them up with water to see if any would leak out. Unfortunately, both leaked like a sieve. These bags are NOT waterproof, as water permeated through the fabric, and not the seams. Totally disappointed with this product. Will not buy another. BTW, these drybags were only purchased 2 months ago.
| Variant | |
| sea to summit | Apple Green |
| volume | 4L |
Sea To Summit Lightweight Waterproof Dry Storage Travel Sack Bag, 4L / Apple Green
Delivery $11.99
Sea To Summit Dry Sack #4 Litre Green
Free delivery between 15–20 May
Dry Sack 4 Litre Apple Green by SEA TO SUMMIT
Delivery between 18–19 May $13.91
Dry Sack 4 Litre Apple Green by SEA TO SUMMIT
Delivery $13.25
Dry Sack 4 Litre Apple Green by SEA TO SUMMIT
Delivery between 14–20 May $13.25
Very lightweight and things stuff into the bag nicely. For my purposes this time I only required the 8L. I like it very much. I have several other sizes in these for larger items. I like Sea to Summit products and have most of what they make. The Big River bag is more for kayaking, not so much for backpacking and hiking as it is much heavier, but the lightweight dry sacks still keep your items very dry. Highly recommend them and all Sea to Summit products. Get yourself an 8L and even 20L. You won’t be disappointed.
I bought this dry sack to bring on trips just in case. Its thin material makes it very convenient to pack. Also, if you aren't putting a lot of things inside it, you can fold it to a small form factor.Its black color is inconspicuous, allowing us to put our valuables, like phones and wallets, and swim with them, without attracting any attention.It is thinner than the bags I usually use for my daily Aareschwumm. I don't know how well it would endure under heavier use. But for the occasional swim during the occasional beach holiday, it's perfect.
Purchased two 2L drybags for my wife and I, to hold our smart phones, wallets, keys etc. We normally store our drybags in the day hatch of our Kayaks. While practicing our rolls, it’s understandable that some water will get into our day hatches. That’s expected. What wasn’t expected was that water got into my drybag, soaking my phone. Jury is still out on whether I’ll be able to get the phone back up and running. If not……$500 gone.After getting home I did a leak test on both bags. Filled them up with water to see if any would leak out. Unfortunately, both leaked like a sieve. These bags are NOT waterproof, as water permeated through the fabric, and not the seams. Totally disappointed with this product. Will not buy another. BTW, these drybags were only purchased 2 ... MorePurchased two 2L drybags for my wife and I, to hold our smart phones, wallets, keys etc. We normally store our drybags in the day hatch of our Kayaks. While practicing our rolls, it’s understandable that some water will get into our day hatches. That’s expected. What wasn’t expected was that water got into my drybag, soaking my phone. Jury is still out on whether I’ll be able to get the phone back up and running. If not……$500 gone.After getting home I did a leak test on both bags. Filled them up with water to see if any would leak out. Unfortunately, both leaked like a sieve. These bags are NOT waterproof, as water permeated through the fabric, and not the seams. Totally disappointed with this product. Will not buy another. BTW, these drybags were only purchased 2 months ago.
After 4 months, one of the two screws in the 'field replaceable' buckle has come out. Luckily, I found the separated half buckle and the screw. The screw takes a jeweler's size phillips head screwdriver, so I can't repair it in the field with my pocket knife. Back home, I decide that I need to glue the screws into the buckle. I am not sure the glue will hold. I also realize that I need to carry a replacement buckle and screws when I go camping. StoS makes the replacement buckle with 2 screws, but the size I need is not listed on the REI website (15 mm or 5/8 inch). I own four StoS dry sacks, all with this size buckle. I can buy the next size larger, but then it is an irregular fit. In addition, I will need to carry a small phillips head screwdriver when camping ... MoreAfter 4 months, one of the two screws in the 'field replaceable' buckle has come out. Luckily, I found the separated half buckle and the screw. The screw takes a jeweler's size phillips head screwdriver, so I can't repair it in the field with my pocket knife. Back home, I decide that I need to glue the screws into the buckle. I am not sure the glue will hold. I also realize that I need to carry a replacement buckle and screws when I go camping. StoS makes the replacement buckle with 2 screws, but the size I need is not listed on the REI website (15 mm or 5/8 inch). I own four StoS dry sacks, all with this size buckle. I can buy the next size larger, but then it is an irregular fit. In addition, I will need to carry a small phillips head screwdriver when camping because the one on my multitool is too big for the tiny screw. The dry sack can not be closed water tight without the buckle. Once half the buckle is separated and lost, the bag is near useless. And the replacement buckle is not available at REI.
Is anything completely waterproof? This bag isn't, but it's not bad either.I'm grateful to Sea to Summit for sending me the item at no cost to me in exchange for an honest review of the item. So I decide to put it through some tough testing. I'm really curious about the claim of being "waterproof" that is so prominent on the label.I started with two very tough tests on this bag: I filled the bag full of wadded up paper and some socks, then sealed it up and sunk it in a sink and let it sit overnight. The next morning I checked it out and the paper had beome somewhat wet.The second test I stuffed it completely full of paper and sealed it up agaain. After I put it in the sink, I could squeze air out of it--which tells me if air can get out, then water can probably ... MoreIs anything completely waterproof? This bag isn't, but it's not bad either.I'm grateful to Sea to Summit for sending me the item at no cost to me in exchange for an honest review of the item. So I decide to put it through some tough testing. I'm really curious about the claim of being "waterproof" that is so prominent on the label.I started with two very tough tests on this bag: I filled the bag full of wadded up paper and some socks, then sealed it up and sunk it in a sink and let it sit overnight. The next morning I checked it out and the paper had beome somewhat wet.The second test I stuffed it completely full of paper and sealed it up agaain. After I put it in the sink, I could squeze air out of it--which tells me if air can get out, then water can probably get in. I let it sit for several hours and came back. All of the paper was soaked and there was about a cup of water inside the bag.Maybe I'm expecting too much from the product. Maybe I'm not sealing it properly. Both are possibilities.On the sealing up of the bag: I was disappointed that the instructions were on the reverse side needed to follow them easily. If the instructions were on the other side of the bag, then the picture in the instructions would match the bag as you hold it--but it's not that way. The picture is on the opposite side so you have to look at the picture in the bag and then reverse it in your mind to seal it up right.For a third test, I decided to fill the bag up with water and seal it up, then put it in a large bowl (upside down) and let it sit for 1 hour. I would then see how much water leaked out. If it's going to keep water out, it also needs to keep water in. As I had feared, after one hour there was a good amount of leakage--nearly 1/2 a cup (100 ml) had drained out. Which means it could also drain in.I consider the possiblity that I'm doing it wrong--that's always something to consider! So I watch a few online videos. One recommends putting five to six folds in the top, another recommends putting your gear inside a plastic garbage bag and then putting that bag inside the dry bag. A third video doesn't tell me anything.So for my next test, I stuff with paper again, squeeze the air out, and put six rolls in the top. I toss it in the shower for 15 minutes to simulate a rainstorm. After 15 minutes I pull it out and the paper is wet--not soaked completely, but plainly wet. Certainly "dryer" than if I had put the paper in the shower without the bag at all--but the stuff's still very wet. It's at this point I think to myself that if I had actually paid for this product I'd take it back for a refund.I set up one final test: A bag in a bag. I get a common household garbage bag and stuff it in the dry bag, then stuff the garbage bag with paper. I then tie the garbage bag to stuf in the dry bag, and seal the dry bag as instructed. I then place it in a vessel of water to see how it performs.Immedaitely I find out that there is a good amount of air trapped in the garbage bag that I can't really "press out" easily and it is clumsy to work through. I do my best, but a good amount of air is trapped in the dry bag. I also wonder what happens in the field when I want to get at my gear in the bag and then re-close the bag--does the garbage bag survive being opened and closed multiple times.The final results of this test were that after two hours the inner garbage bag tied up DID keep everything inside of it dry, but the material between the garbabge bag and the dry bag had a good amount of moisture.I did not complete any tests on the strenght of the dry bag, but it does appear to be sturdy and durable. It certainly stands up to basic use without tearing, unlike a garbage bag alone.Good points:1) It collapses down very small and makes for a very nice container for water. I'm pretty good at bushcraft, but it's kind of hard to make a "bucket" out in the field.2) It keeps stuff "mostly dry" -- better than nothing at all.3) It is easy to open and close.4) It is easy to pack and unpack.5) Because air tends to get trapped in the bag, most of the time as regular pack of gear will float in water.6) If a buckle breaks, it can be replaced -- although I not test that feature.Not-so-good points:1) It isn't waterproof.2) It can trap air and become bulky to pack (although this leads to good point #5 above).3) The buckling system of rolling then buckling is awkward and takes up space in the pack.Conclusions:It's better than nothing, and coupled with a secondary bag such as a garbage bag, it can be a useful tool on trips where you expect the peril of extreme water--kayak, canoe, or rainforest hiking. I wouldn't trust it alone to keep gear dry--especially electornics gear. However, I'll use it on such trips because that coupled with a secondary bag is really just about the only hope you have--alternatives are just not available.I'm not saying I wouldn't use it--I am saying that i wouldn't use it by itself and expect it to keep the contents completely dry. It says it's waterproof, but it isn't.PLUS: A number of the reviews here are showing total success in keeping gear dry, and that is consistent with reviews on other websites. There may be tips and tricks that I have missed.
These sacks keep stuff dry, but are awkward to close and "burp" the air out. The clasps are really small and stiff, and very difficult to squeeze and open with warm hands and fingers, nearly impossible with cold hands/fingers or with gloves on. Once they are closed for any length of time, the top closure bands retain the "memory" of the manner in which they were bent to close the sack and are difficult to straighten out and hold together for a tight seal. For the reduced price, these weren't a bad deal, but there are much better dry sacks on the market.
We are very happy with this drybag purchase for our kayak-packing adventures! Sea to Summit, in our experience, has been a reliable and quality brand so we felt confident in this purchase from the start. The bag is lightweight and malleable so you can fit a lot into this bag AND fit this bag into a lot of places once packed. We have Wilderness System kayaks (Tempests) and we need to pack camping gear in all of the hatches but only one hatch can easily fit full dry bags. With this drybag, however, you can easily squeeze it into all hatches thanks to its soft material with plenty of give. That said, I was pretty skeptical that this bag would keep our stuff dry and not tear when actually out in the elements because the material feels similar to a balloon, it's so thin. ... MoreWe are very happy with this drybag purchase for our kayak-packing adventures! Sea to Summit, in our experience, has been a reliable and quality brand so we felt confident in this purchase from the start. The bag is lightweight and malleable so you can fit a lot into this bag AND fit this bag into a lot of places once packed. We have Wilderness System kayaks (Tempests) and we need to pack camping gear in all of the hatches but only one hatch can easily fit full dry bags. With this drybag, however, you can easily squeeze it into all hatches thanks to its soft material with plenty of give. That said, I was pretty skeptical that this bag would keep our stuff dry and not tear when actually out in the elements because the material feels similar to a balloon, it's so thin. BUT, after a handful of overnight trips, this bag has held up and has kept everything we've stuffed into it dry and intact. I'd highly recommend this bag if you need a flexible and durable pack!
These bags sound like a great idea. They are supposed to keep gear dry and compartmentalized. We just finished hiking the Appalachian Trail and this piece of gear was our number one regret. We didn't expect our gear to stay dry if these bags were submersed in a pool. Fair enough. But our gear didn't even stay dry in the rain. Not just the rain, our gear was wet on the inside if the air was humid! I don't understand where the dry part of these dry sacks comes into play. Moisture just saturated through the fabric. Halfway through our hike, my family of 6 tossed $500+ worth of dry sacks and replaced them with Great Value gallon freezer bags! Just stick with the Ziplocs. You'll thank me later.
The Big River Dry Bags are perfect for my canoe and kayak trips. SUP's too. They are tough, water tight, durable and the tie down grommets make for a dry secure load. I bought several sizes and like them so much, bought more to give as gifts. Everyone loves them.I also bought several different size Lightweight Dry Sacks, and am just as happy with them. I do a lot of 2- 7 day overnight backpacking trips in Maine, New Hampshire & Vermont. The bags are used constantly.
Bought our first of these several years ago, then bought more. I wanted help getting organized while traveling. We use these often! The kids and I each carry a 4 L in our hiking bag (aka day pack). In one 4L, I carry emergency items I want to stay dry, like a hat, gloves, and scarf. I also carry a 2nd 4L, for med kit items like cremes, band aids, tweezers, knife, paracord, Farkel set (game), and walkie talkie. It's small enough to just leave packed and easily move it from one bag to another (for example, when we're hiking one day and on waterpark rides the next). For our kayaking 4L, I carry phone, an apple (the actual fruit :), paracord, tiny towel, several fruit snacks or fruit leather packages, and walkie talkie.Additionally, we each have a 20 L sack for dirty ... MoreBought our first of these several years ago, then bought more. I wanted help getting organized while traveling. We use these often! The kids and I each carry a 4 L in our hiking bag (aka day pack). In one 4L, I carry emergency items I want to stay dry, like a hat, gloves, and scarf. I also carry a 2nd 4L, for med kit items like cremes, band aids, tweezers, knife, paracord, Farkel set (game), and walkie talkie. It's small enough to just leave packed and easily move it from one bag to another (for example, when we're hiking one day and on waterpark rides the next). For our kayaking 4L, I carry phone, an apple (the actual fruit :), paracord, tiny towel, several fruit snacks or fruit leather packages, and walkie talkie.Additionally, we each have a 20 L sack for dirty clothes--these sacks seem to help keep the body odor contained, plus the roll top becomes a handy carry handle for laundry days on the road. (The sacks air out over time.) We camp in both hot and cold climates in one trip, but are limited on space, so I was delighted to discover that we can squish about 4-6 outfits of cold-weather items into one of these 20 L sacks by squishing out the air--works far better than those "space bags". As a side bar, I did try a 35 L bag, but found it too big for us--it is too big for backpacks, day packs, and suitcases. So thanks to these, our day packs are more organized, our big hiking backpacks are more organized, and dirty clothes' smells are contained. I will note that this model is the thicker material without the venting option. If you want the thinner material version, seek the nano. If you want venting, that's the eVent. I like the nano, but not the eVent. I like this series the best of all of them. Your results may vary. Oh, almost forgot to mention: we have also used a 20L on our kayak to hold two doublenest hammocks and extra fruit. I have used an 8 L for packable jacket, gloves, ski hat, scarf--had to roll them up pretty tightly, but they did fit. Hope these comments help you select a size that works for you.
| Variant | |
| sea to summit | Apple Green |
| volume | 4L |
