Therm-a-Rest Basecamp L L / Poseidon Blue
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 be inflated 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 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 be inflated 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 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 be inflated 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 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 be inflated 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 reasons. A compact stuff sack is included.
in 23 offers
The lowest price for Therm-a-Rest Basecamp L L / Poseidon Blue right now is $155.80 at Oliunìd, compared across 16 retailers.
The all-time low was $125.83 on 13 Mar 2026 — today's price is 24% above the lowest ever. It has been notably cheaper before — worth setting a price alert.
Prices last updated 11 Oct 2026.
Last updated at 11/10/2026 09:44:16
Therm-a-Rest Basecamp Self-Inflating Foam Camping Sleeping Pad, Large - 25 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 sleeping mat - Poseidon - Large
Delivery by 20 Oct $95.73
Therm-a-Rest BaseCamp self-inflating sleeping mat - Poseidon - Large
Delivery $70.10
Therm-a-Rest BaseCamp self-inflating sleeping mat - Poseidon - Large
Delivery $70.10
Therm-A-Rest BaseCamp Sleeping Mattress Large
Delivery $113.76
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Therm-A-Rest BaseCamp Poseidon Mattress Large
Delivery between 15–19 Oct $31
Therm-a-Rest Basecamp Self-Inflating Camping Sleeping Pad
Delivery $344.40
Therm-a-rest Basecamp L Self-inflating Camping Mat R-value 6.0
Delivery $69.27
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!
| Pad Length | Regular, Large |
| Pad Width | 76 cm (XLarge) |
| Sleeping Capacity | 1 |
| Pad Weight | 4 lb (XLarge) |
| Double | No |
Therm-a-Rest Basecamp Self-Inflating Foam Camping Sleeping Pad, Large - 25 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 sleeping mat - Poseidon - Large
Delivery by 20 Oct $95.73
Therm-a-Rest BaseCamp self-inflating sleeping mat - Poseidon - Large
Delivery $70.10
Therm-a-Rest BaseCamp self-inflating sleeping mat - Poseidon - Large
Delivery $70.10
Therm-A-Rest BaseCamp Sleeping Mattress Large
Delivery $113.76
| Pad Length | Regular, Large |
| Pad Width | 76 cm (XLarge) |
| Sleeping Capacity | 1 |
| Pad Weight | 4 lb (XLarge) |
| Double | No |
