Sea to Summit Ultra-Sil Compression Sack Blue Atoll / 35L
Sea to Summit - Ultra-Sil Compression Sack 35L blue atoll - **The Ultra-Sil Compression Sack is ideal for the gram-counting user who wants function and convenience without carrying unnecessary weight. Space-saving, ultra-lightweight gear storage for organised packing. Pack down your compressible, bulky gear with minimal added weight. Save space and keep your gear organised with our extensive range of mesh sacks, stuff sacks and compression sacks.
Sea to Summit - Ultra-Sil Compression Sack 35L blue atoll - **The Ultra-Sil Compression Sack is ideal for the gram-counting user who wants function and convenience without carrying unnecessary weight. Space-saving, ultra-lightweight gear storage for organised packing. Pack down your compressible, bulky gear with minimal added weight. Save space and keep your gear organised with our extensive range of mesh sacks, stuff sacks and compression sacks.
Sea to Summit - Ultra-Sil Compression Sack 35L blue atoll - **The Ultra-Sil Compression Sack is ideal for the gram-counting user who wants function and convenience without carrying unnecessary weight. Space-saving, ultra-lightweight gear storage for organised packing. Pack down your compressible, bulky gear with minimal added weight. Save space and keep your gear organised with our extensive range of mesh sacks, stuff sacks and compression sacks.
Sea to Summit - Ultra-Sil Compression Sack 35L blue atoll - **The Ultra-Sil Compression Sack is ideal for the gram-counting user who wants function and convenience without carrying unnecessary weight. Space-saving, ultra-lightweight gear storage for organised packing. Pack down your compressible, bulky gear with minimal added weight. Save space and keep your gear organised with our extensive range of mesh sacks, stuff sacks and compression sacks.
in 15 offers
The lowest price for Sea to Summit Ultra-Sil Compression Sack Blue Atoll / 35L right now is $33.44 at Velogear, compared across 15 retailers.
The all-time low was $33.44 on 31 July 2025. That's the lowest price we've ever tracked — a great time to buy.
Prices last updated 8 June 2026.
Last updated at 08/06/2026 22:21:58
Sea To Summit Ultra-Sil Compression Sack - SUPER SALE-Blue Atoll-35L
Delivery between 12–22 June $9.95
Sea to Summit Ultra-Sil Compression Sack 35L Blue Atoll
Delivery between 11–19 June $15
Sea to Summit Ultra-Sil Compression Sack 35 Litre - Blue Atoll
Delivery $10
Sea To Summit Ultra-Sil Compression Sack 35 Litre - Blue Atoll
Delivery $10.35
Sea to Summit Ultra-Sil Compression Sack 35 Litre - Blue Atoll
Delivery between 11–19 June $9.90
Sea to Summit Ultra-Sil Compression Sack 35L / Blue Atoll
Delivery $15
Sea to Summit Ultra-Sil Compression Sack - Backpack accessory
Delivery $96.65
Sea To Summit Ultra-Sil 35L Compression Sack [Colour:Light Blue]
Delivery $9.95
Ultra-Sil Compression Sack Blue Atoll 35L
Delivery $8.95
Sea To Summit Ultra-Sil Compression Sack 35L / Blue Atoll
Delivery between 15–23 June $9.95
originally posted on seatosummitusa.com
Can you say compression?The ultra sil compression sack did exactly as described. I was able to pack for a three night stay and all items fit into my backpack with the help of the compression sack. This enabled me to place the backpack under the seat on my flight and classified as a “personal item” so I avoided any additional cost.
originally posted on moosejaw.com
I bought this for traveling, not for camping. I have used it a couple of times to smush more stuff into suitcases. It's light and does not add bulk. I like the strap across the bottom that allows it be carried more easily. It's just a hand hold, not a shoulder strap. The compression straps and bungee string do hang down and swing a bit, but it is helpful for use as an overnight bag--for example, to keep things handy for a one night stay on a longer road trip. The construction seems sturdy, but I have not had it in service for very long nor subjected it to extreme duress.
originally posted on REI
This is the best compression sack I've ever used. My synthetic quilt doesn't pack small like a down one would. I couldn't have fit the bulky quilt into my backpack without the Ultra-Sil compression sack. It works perfectly, is built to last, weighs next to nothing, protects the quilt from moisture. While the sack is pricey, it's worth it.
| Volume | 35l |
| Dimensions | 57.8 x 28.8 x 28.8 cm |
Sea To Summit Ultra-Sil Compression Sack - SUPER SALE-Blue Atoll-35L
Delivery between 12–22 June $9.95
Sea to Summit Ultra-Sil Compression Sack 35L Blue Atoll
Delivery between 11–19 June $15
Sea to Summit Ultra-Sil Compression Sack 35 Litre - Blue Atoll
Delivery $10
Sea To Summit Ultra-Sil Compression Sack 35 Litre - Blue Atoll
Delivery $10.35
Sea to Summit Ultra-Sil Compression Sack 35 Litre - Blue Atoll
Delivery between 11–19 June $9.90
Can you say compression?The ultra sil compression sack did exactly as described. I was able to pack for a three night stay and all items fit into my backpack with the help of the compression sack. This enabled me to place the backpack under the seat on my flight and classified as a “personal item” so I avoided any additional cost.
I bought this for traveling, not for camping. I have used it a couple of times to smush more stuff into suitcases. It's light and does not add bulk. I like the strap across the bottom that allows it be carried more easily. It's just a hand hold, not a shoulder strap. The compression straps and bungee string do hang down and swing a bit, but it is helpful for use as an overnight bag--for example, to keep things handy for a one night stay on a longer road trip. The construction seems sturdy, but I have not had it in service for very long nor subjected it to extreme duress.
This is the best compression sack I've ever used. My synthetic quilt doesn't pack small like a down one would. I couldn't have fit the bulky quilt into my backpack without the Ultra-Sil compression sack. It works perfectly, is built to last, weighs next to nothing, protects the quilt from moisture. While the sack is pricey, it's worth it.
I bought this in anticipation of a week long trip to New York with only carry on luggage. We accumulate so much dirty laundry on our trip! Today I got it and stuffed a whole hamper of laundry in it and I got it reduced to one third it’s size. I think if I folded the clothes better I could probably compress it much smaller. I think I’ll have to order one for each of my family! I saw this reviewed on the NYT Wirecutter page.
Super sturdy and a surprisingly comfortable fit. Often these small packable bags feel terrible once you put them on but not this one. I wouldn't mind if it had a chest strap or a tiny pocket somewhere but I understand leaving these things off to make it an ideal weight for adding to your backpacking gear. Very well made and a good buy!
This is the first time I've used a product that takes the air out of the clothing and compresses it. Your tubes work. A side use would be to surround a wine bottle with cloths and place it in the tube. Perfect cushioning. In the "used for" section below, should include travel.
Over the years I've owned a good number of Sea to Summit products and they never cease to amaze. This one is no exception. It's extremely light while giving up nothing in strength and reliability. I can say this with great confidence because this is my second S-t-S compression sack. The first one is 5 years old and has been used on every trip since I purchased it. It still looks and preforms like new. The high quality material and stitching show no signs of wear or failure. I highly recommend this product without reservation.
I used to struggle finding room for my long down coat. After finding out about this stuff sack, I had room to spare! It’s really strong, and cinches down tight. I went back the next day and bought one for my husband’s coat. I strongly recommend it and expect to buy more in the future!!!
Used the Ultra-Sil 10 L compression sack to reduce volume of extra clothing in my pack on a recent 10-day backpacking trip. It allowed me to get everything I needed into the pack, which would have been difficult without compression. Light weight. Also convenient for storing clothing at night to keep things organized and dry. Using the 6 liter for protecting my down sweater inside my day pack on days when it might rain and I want just a bit more protection than the pack will give.
I bought this compression sack to supplement others and or replace some I had that were heavier. I haven’t used it yet but will do so very soon. I can tell though it is high quality and likely to withstand the rigors of long distance trekking.
| Volume | 35l |
| Dimensions | 57.8 x 28.8 x 28.8 cm |
