All lovers of car camping will appreciate the luxurious features of the large BaseCamp mattress. This warm and comfortable mattress has a 5 cm thick self-inflating foam with an R-value of 6.0 for even more enjoyable nights under the starry sky. The thoughtfully designed cover is lightweight and feels soft to the touch. The versatile self-inflating mattress features a high-quality WingLock valve, allowing it to inflate three times faster thanks to the larger opening and one-directional inflation. Like all Therm-a-Rest mattresses, the BaseCamp is manufactured domestically for quality and environmental protection reasons. A compact stuff sack is included.
All lovers of car camping will appreciate the luxurious features of the large BaseCamp mattress. This warm and comfortable mattress has a 5 cm thick self-inflating foam with an R-value of 6.0 for even more enjoyable nights under the starry sky. The thoughtfully designed cover is lightweight and feels soft to the touch. The versatile self-inflating mattress features a high-quality WingLock valve, allowing it to inflate three times faster thanks to the larger opening and one-directional inflation. Like all Therm-a-Rest mattresses, the BaseCamp is manufactured domestically for quality and environmental protection reasons. A compact stuff sack is included.
There are no live offers for Therm-a-Rest Basecamp Poseidon Mattress XL right now. The all-time low we recorded was $155.77 on 28 July 2026. Set a price alert to hear when it's back in stock.
Prices last updated 4 Sept 2026.
Therm-a-Rest Basecamp Poseidon Mattress XL
All lovers of car camping will appreciate the luxurious features of the large BaseCamp mattress. This warm and comfortable mattress has a 5 cm thick self-inflating foam with an R-value of 6.0 for even more enjoyable nights under the starry sky. The thoughtfully designed cover is lightweight and feels soft to the touch. The versatile self-inflating mattress features a high-quality WingLock valve, allowing it to inflate three times faster thanks to the larger opening and one-directional inflation. Like all Therm-a-Rest mattresses, the BaseCamp is manufactured domestically for quality and environmental protection reasons. A compact stuff sack is included.
All lovers of car camping will appreciate the luxurious features of the large BaseCamp mattress. This warm and comfortable mattress has a 5 cm thick self-inflating foam with an R-value of 6.0 for even more enjoyable nights under the starry sky. The thoughtfully designed cover is lightweight and feels soft to the touch. The versatile self-inflating mattress features a high-quality WingLock valve, allowing it to inflate three times faster thanks to the larger opening and one-directional inflation. Like all Therm-a-Rest mattresses, the BaseCamp is manufactured domestically for quality and environmental protection reasons. A compact stuff sack is included.
Last updated at 09/04/2026 22:39:45
Therm-a-Rest Basecamp Self-Inflating Foam Camping Sleeping Pad, X-Large - 30 x 77 Inches
Free delivery
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Therm-A-Rest BaseCamp self-inflating mattress-XL-Poseidon Blue
Delivery by 15 Sept $95.73
Thermarest BaseCamp WV Mat, Poseidon Blue, X-Large
Delivery $28.58
Therm-A-Rest BaseCamp Poseidon Mattress XL
Delivery between 10–14 Sept $31
Thermarest Basecamp - X Large
Free delivery
Therm-a-Rest Basecamp Self-Inflating Foam Camping Sleeping Pad, X-Large - 30 X 77 Inches
Delivery $27.76
Thermarest BaseCamp Self-Inflating Sleeping Pad - Poseidon Blue - XLarge
Free delivery
THERM-A-REST BaseCamp L XL / Poseidon Blue
Free delivery between 10–18 Sept
| Variant | |
| size | XL |
| color | Poseidon Blue |
Therm-a-Rest Basecamp Self-Inflating Foam Camping Sleeping Pad, X-Large - 30 x 77 Inches
Free delivery
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 mattress-XL-Poseidon Blue
Delivery by 15 Sept $95.73
Thermarest BaseCamp WV Mat, Poseidon Blue, X-Large
Delivery $28.58
Therm-A-Rest BaseCamp Poseidon Mattress XL
Delivery between 10–14 Sept $31
Thermarest Basecamp - X Large
Free delivery
| Variant | |
| size | XL |
| color | Poseidon Blue |
