Thermarest Basecamp Sleeping Mat (Poseidon Blue, Large)
Built to offer supreme comfort in the frontcountry. If you're still car camping or base camping in the frontcountry with your backpacking pad introduce yourself to the luxurious and roomy BaseCamp sleeping pad. This warm and comfy pad features 2 inches 5 cm of premium self-inflating foam offering campers a 6.0 R-value for better nights under the stars. Thoughtful face fabrics are light and soft for your comfort. The versatile self-inflating pad features the high-performance WingLock valve which has three times the airflow rate of the classic valve thanks to a larger opening and one-way inflation. Like all Thermarest pads the BaseCamp is made in market to ensure quality and minimize environmental impact. The pad includes a go-anywhere stuff sack.
Built to offer supreme comfort in the frontcountry. If you're still car camping or base camping in the frontcountry with your backpacking pad introduce yourself to the luxurious and roomy BaseCamp sleeping pad. This warm and comfy pad features 2 inches 5 cm of premium self-inflating foam offering campers a 6.0 R-value for better nights under the stars. Thoughtful face fabrics are light and soft for your comfort. The versatile self-inflating pad features the high-performance WingLock valve which has three times the airflow rate of the classic valve thanks to a larger opening and one-way inflation. Like all Thermarest pads the BaseCamp is made in market to ensure quality and minimize environmental impact. The pad includes a go-anywhere stuff sack.
Built to offer supreme comfort in the frontcountry. If you're still car camping or base camping in the frontcountry with your backpacking pad introduce yourself to the luxurious and roomy BaseCamp sleeping pad. This warm and comfy pad features 2 inches 5 cm of premium self-inflating foam offering campers a 6.0 R-value for better nights under the stars. Thoughtful face fabrics are light and soft for your comfort. The versatile self-inflating pad features the high-performance WingLock valve which has three times the airflow rate of the classic valve thanks to a larger opening and one-way inflation. Like all Thermarest pads the BaseCamp is made in market to ensure quality and minimize environmental impact. The pad includes a go-anywhere stuff sack.
Built to offer supreme comfort in the frontcountry. If you're still car camping or base camping in the frontcountry with your backpacking pad introduce yourself to the luxurious and roomy BaseCamp sleeping pad. This warm and comfy pad features 2 inches 5 cm of premium self-inflating foam offering campers a 6.0 R-value for better nights under the stars. Thoughtful face fabrics are light and soft for your comfort. The versatile self-inflating pad features the high-performance WingLock valve which has three times the airflow rate of the classic valve thanks to a larger opening and one-way inflation. Like all Thermarest pads the BaseCamp is made in market to ensure quality and minimize environmental impact. The pad includes a go-anywhere stuff sack.
in 18 offers
The lowest price for Thermarest Basecamp Sleeping Mat (Poseidon Blue, Large) right now is $168.94 at Ubuy, compared across 14 retailers.
The all-time low was $168.50 on 9 Oct 2025. That's the lowest price we've ever tracked — a great time to buy.
Prices last updated 10 May 2026.
Last updated at 10/05/2026 16:51:02
Therm-a-Rest Basecamp Sleeping Mat, Large, Poseidon Blue
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Therm-a-Rest Basecamp Self-Inflating Camping Sleeping Pad
Delivery between 15–19 May $13.73
Therm-A-Rest BaseCamp Poseidon madrats Therm-A-Rest BaseCamp Poseidon madrats Large
Therm-A-Rest BaseCamp Poseidon ležišče Large
Therm-A-Rest BaseCamp Poseidon Mattress Large
Delivery between 14–18 May $31
Therm-a-Rest Basecamp Self-Inflating Camping Sleeping Pad
Delivery between 15–19 May $14.65
Therm-a-Rest Basecamp Self-Inflating Camping Sleeping Pad
Delivery between 15–19 May $12.20
Therm-a-Rest Basecamp Self-Inflating Camping Sleeping Pad
Delivery between 15–19 May $12.20
Therm-a-Rest Basecamp Self-Inflating Camping Sleeping Pad
Free delivery between 17–21 May
Therm-a-Rest Basecamp Self-Inflating Camping Sleeping Pad
Delivery between 16–22 May $11.51
originally posted on cascadedesigns.com
I am coming up on 28 years with the U.S. Army and will retire in the coming year. I was stranded in a Kuwait in 2010 and forced to live at a place called Camp Buehring for a year. I had a military issued cot but that was not going to meet my standards. A good friend ordered me a Thermarest Basecamp sleeping pad. It fit perfectly on the issued military cot. I never had one issue with this pad leaking down or tearing. I used it religiously for the next 10 years submitting it to the outdoor elements. I used it for the last time this year in Bosnia for a little vacation, courtesy of the Army. If you are wanting a indestructible pad that will last and is priced well, then this is it. I did loose my bag that it comes in on the last trip so now I can’t roll it up. ... MoreI am coming up on 28 years with the U.S. Army and will retire in the coming year. I was stranded in a Kuwait in 2010 and forced to live at a place called Camp Buehring for a year. I had a military issued cot but that was not going to meet my standards. A good friend ordered me a Thermarest Basecamp sleeping pad. It fit perfectly on the issued military cot. I never had one issue with this pad leaking down or tearing. I used it religiously for the next 10 years submitting it to the outdoor elements. I used it for the last time this year in Bosnia for a little vacation, courtesy of the Army. If you are wanting a indestructible pad that will last and is priced well, then this is it. I did loose my bag that it comes in on the last trip so now I can’t roll it up. Thermarest can you send me one please? Also ordered a Thermarest camp pillow in camo colored and use it nightly at home. Best products I have spent money on and were well worth it. Thanks Thermarest for being there for me during those years in the military. My back thanks you!V/r1SG Fred GanousCo. A, 1-131st AVN REGT"DEATH’S ANGELS"
originally posted on altitude-sports.com
I took this pad camping this week, and I was very pleased with it. The design isn't compact so not ideal for backpacking, but if you're bringing a car, definitely worth bringing it.The price point is slightly unreasonable, but I used Alti credit and some discount promotion. If I didn't have these, I wouldn't have purchased. Way too expensive unless you're going to get a full use out of it.I don't know how long these will hold up as I've only used for 1 trip so far.
originally posted on cascadedesigns.com
Dear Cascade Designs,This sleeping pad is very hard to roll up and is very slippery with my Coleman sleeping bag. Would I buy another one? No! My previous Thermarest sleeping pad only lasted 40 years or so & I used it hundreds of times. I will be surprised if this one holds up as well.( I picked this one because it seemed to be the most similar to my previous pad. The old Thermarest was easy to roll up & was not slippery. I have no use for the self inflating feature, I’m old school I guess )Ed
| Brand Colour | Poseidon - Poseidon Blue |
| Construction | Premium self-inflating foam |
| Dimensions | 196 x 64 cm | 77" x 25" |
| Thickness | 5 cm | 2" |
| Packed | 66 x 23 cm | 26" x 9" |
Therm-a-Rest Basecamp Sleeping Mat, Large, Poseidon Blue
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Therm-a-Rest Basecamp Self-Inflating Camping Sleeping Pad
Delivery between 15–19 May $13.73
Therm-A-Rest BaseCamp Poseidon madrats Therm-A-Rest BaseCamp Poseidon madrats Large
Therm-A-Rest BaseCamp Poseidon ležišče Large
Therm-A-Rest BaseCamp Poseidon Mattress Large
Delivery between 14–18 May $31
I am coming up on 28 years with the U.S. Army and will retire in the coming year. I was stranded in a Kuwait in 2010 and forced to live at a place called Camp Buehring for a year. I had a military issued cot but that was not going to meet my standards. A good friend ordered me a Thermarest Basecamp sleeping pad. It fit perfectly on the issued military cot. I never had one issue with this pad leaking down or tearing. I used it religiously for the next 10 years submitting it to the outdoor elements. I used it for the last time this year in Bosnia for a little vacation, courtesy of the Army. If you are wanting a indestructible pad that will last and is priced well, then this is it. I did loose my bag that it comes in on the last trip so now I can’t roll it up. ... MoreI am coming up on 28 years with the U.S. Army and will retire in the coming year. I was stranded in a Kuwait in 2010 and forced to live at a place called Camp Buehring for a year. I had a military issued cot but that was not going to meet my standards. A good friend ordered me a Thermarest Basecamp sleeping pad. It fit perfectly on the issued military cot. I never had one issue with this pad leaking down or tearing. I used it religiously for the next 10 years submitting it to the outdoor elements. I used it for the last time this year in Bosnia for a little vacation, courtesy of the Army. If you are wanting a indestructible pad that will last and is priced well, then this is it. I did loose my bag that it comes in on the last trip so now I can’t roll it up. Thermarest can you send me one please? Also ordered a Thermarest camp pillow in camo colored and use it nightly at home. Best products I have spent money on and were well worth it. Thanks Thermarest for being there for me during those years in the military. My back thanks you!V/r1SG Fred GanousCo. A, 1-131st AVN REGT"DEATH’S ANGELS"
I took this pad camping this week, and I was very pleased with it. The design isn't compact so not ideal for backpacking, but if you're bringing a car, definitely worth bringing it.The price point is slightly unreasonable, but I used Alti credit and some discount promotion. If I didn't have these, I wouldn't have purchased. Way too expensive unless you're going to get a full use out of it.I don't know how long these will hold up as I've only used for 1 trip so far.
Dear Cascade Designs,This sleeping pad is very hard to roll up and is very slippery with my Coleman sleeping bag. Would I buy another one? No! My previous Thermarest sleeping pad only lasted 40 years or so & I used it hundreds of times. I will be surprised if this one holds up as well.( I picked this one because it seemed to be the most similar to my previous pad. The old Thermarest was easy to roll up & was not slippery. I have no use for the self inflating feature, I’m old school I guess )Ed
I love the quality of materials, the quality of the manufacturing, the design, and the functionality of this pad. I got the "large" size, and I am a big man (255 lbs, 6'2"), and this pad is comfortable enough for me without sacrificing too much weight in transit. I have no doubt that this will provide ample insulation and padding for any/all needs, and that it will last a long time with proper use and care.The one gripe I have is that it is too long in its bag. This is because it comes directly from the manufacturer only rolled up, not folded in half along the width first as a lot of other sleeping pads that I have had in the past do. I guess this just makes it a little more awkward as far as storing it in/on my pack if I want to go backpacking. I'm having a ... MoreI love the quality of materials, the quality of the manufacturing, the design, and the functionality of this pad. I got the "large" size, and I am a big man (255 lbs, 6'2"), and this pad is comfortable enough for me without sacrificing too much weight in transit. I have no doubt that this will provide ample insulation and padding for any/all needs, and that it will last a long time with proper use and care.The one gripe I have is that it is too long in its bag. This is because it comes directly from the manufacturer only rolled up, not folded in half along the width first as a lot of other sleeping pads that I have had in the past do. I guess this just makes it a little more awkward as far as storing it in/on my pack if I want to go backpacking. I'm having a difficult time figuring out how to store it in a way that my rain cover will keep it dry if I get caught in foul weather along the trail. If I'm not worried about foul weather, I can easily connect this thing onto my pack, as the bag it came with has a durable shoulder strap on which to secure a carabiner.
I have many therma-rest brand pads they have all last without issues and are very simple to use. Get to site unroll open valve. It will mostly self inflate. Give it a few puffs to firm up, get on and adjust firmness as desired by opening valve again. Consistent good ground sleeper but at my age I put it on my cot. This one’s a gift for a tough potential son in law who front country camps with just a tent and sleeping bag!
I have 3 different version of this product, spanning decades, all are still functional.I also have several thermarest portable seat cushions, using the same tech as these inflatable beds, all getting heavy use, hours everyday, as meditation cushions.My main basecamp, an older generation of this one, was over 10 years old and being used everyday as my bed, in my house.One day it developed an air bubble, due to the interior foam becoming delaminated from the shell, and the bubble grew bigger over a few days and the product became unusable.I remember the pad probably had a limited lifetime warranty, like the current models,and I contacted the company through email to inquire if my pad could be repaired.The response time seemed slow, about 2 weeks, but once we ... MoreI have 3 different version of this product, spanning decades, all are still functional.I also have several thermarest portable seat cushions, using the same tech as these inflatable beds, all getting heavy use, hours everyday, as meditation cushions.My main basecamp, an older generation of this one, was over 10 years old and being used everyday as my bed, in my house.One day it developed an air bubble, due to the interior foam becoming delaminated from the shell, and the bubble grew bigger over a few days and the product became unusable.I remember the pad probably had a limited lifetime warranty, like the current models,and I contacted the company through email to inquire if my pad could be repaired.The response time seemed slow, about 2 weeks, but once we made contact, they confirmed they would honor the warranty.My pad's issue was not repairable, so they sent me a new one which arrived in about a week.I went back and looked at the statement for the warranty, and in it they said they would respond to request within 3 weeks.They kept their word!I'm super impressed.In this day and age, with all the lying and fraudulence going on in pharmacy, health care, supreme court, religion, I'm always happy to learn there are people who mean what they say, and honor their word.I love the thermarest products, and felt it was important to give positive feedback in this review,thereby inspiring other people and companies in the world to really have integrity, honesty,and support your products with conviction.
I work wildland fire support from May through August/September and I camp out almost 99% of that time using a variety of camping devices: flashlights, tents, boots, tarps, cots and ... mats/pads. This one has a couple of nice qualities. The In/Out flow tubes are clearly marked and easy to use. It rolls up nicely. The bag is overlarge making for easy storage.BUT ... the main function of any pad is to provide an comfortable nights rest. For years I had a Lightspeed that was tremendous but had to be replaced and I bought this. I bought the Regular size. It states that it's 20 inches in width. WRONG! the entire thing might be 20 inches in width but the internal pad is 18 inches. THE PROBLEM .... At 5'10" and 155lbs I'm not a big person and I could not turn over on ... MoreI work wildland fire support from May through August/September and I camp out almost 99% of that time using a variety of camping devices: flashlights, tents, boots, tarps, cots and ... mats/pads. This one has a couple of nice qualities. The In/Out flow tubes are clearly marked and easy to use. It rolls up nicely. The bag is overlarge making for easy storage.BUT ... the main function of any pad is to provide an comfortable nights rest. For years I had a Lightspeed that was tremendous but had to be replaced and I bought this. I bought the Regular size. It states that it's 20 inches in width. WRONG! the entire thing might be 20 inches in width but the internal pad is 18 inches. THE PROBLEM .... At 5'10" and 155lbs I'm not a big person and I could not turn over on this pad without falling to one side because it's too narrow. Fine for a child not for a guy who's working like a dog all day and needs a full nights rest. Maybe if you only sleep on your back but not for adults needing a restfull night.
The slick slippery fabric not only makes the pad look and feel cheap but effects the functionality by making it difficult to stay positioned on the pad. The nylon that was used on Therm A Rest's and still used on the military pads was functional. Unfortunately it seems your military pads do not come in 30 in widths. For the premium price I should not have to thinking about a way to modify the pad especially since they used to be great right out of the box. And please do not respond that the new fabric is better because I do not believe it.
I reached out to customer service to try and handle this, they didn't respond, and apparently aren't interested in helping me solve this issue. If I could give zero stars I would.Anyway, this thing failed day one. It inflates fine, and is very comfortable at first, but loses air over night and I wake up on the floor...which is very uncomfortable.I'm sure it's an easy fix, bad valve or something, but again..customer service didn't respond or really seem to care at all. So it's starting to look like I've wasted about 150 bucks. I'll never buy from them again, and I encourage you not to either. Thanks for nothing
Just posted a review on my replacement pad (BA rapide), but I thought I should give some love to my tried and true since it's ol' reliable. Bought this back in 2021, and I've used it car camping, general camping, and backpacking in all kinds of weather and terrain. No leaks, no flaws, nothing. It's not the most comfortable thing out there for side sleepers (me), but man is it reliable. It's thick enough that it kept me out of the water when our tent leaked during a severe storm, didn't pop when we slept on the sharpest ground I've ever felt, kept me warm through winter storms, and is still looking brand new three years later. The pump sack isn't great, but it's small enough that I can blow it up with just my lungs if I'm in a hurry. Removed one star just for the ... MoreJust posted a review on my replacement pad (BA rapide), but I thought I should give some love to my tried and true since it's ol' reliable. Bought this back in 2021, and I've used it car camping, general camping, and backpacking in all kinds of weather and terrain. No leaks, no flaws, nothing. It's not the most comfortable thing out there for side sleepers (me), but man is it reliable. It's thick enough that it kept me out of the water when our tent leaked during a severe storm, didn't pop when we slept on the sharpest ground I've ever felt, kept me warm through winter storms, and is still looking brand new three years later. The pump sack isn't great, but it's small enough that I can blow it up with just my lungs if I'm in a hurry. Removed one star just for the comfort factor since I'm a side sleeper, but that's my only complaint. Still keeping this one around as a backup and as some gear to loan friends who want to camp but don't have some gear.
| Brand Colour | Poseidon - Poseidon Blue |
| Construction | Premium self-inflating foam |
| Dimensions | 196 x 64 cm | 77" x 25" |
| Thickness | 5 cm | 2" |
| Packed | 66 x 23 cm | 26" x 9" |
