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.
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.
in 13 offers
The lowest price for Therm-a-Rest Basecamp Poseidon Mattress XL right now is $188.17 at Oliunìd, compared across 12 retailers.
The all-time low was $129.78 on 11 Sept 2026 — today's price is 45% above the lowest ever. It has been notably cheaper before — worth setting a price alert.
Prices last updated 16 Oct 2026.
Last updated at 16/10/2026 09:18:07
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 sleeping mat - Poseidon Blue - XL
Delivery by 23 Oct $95.73
Therm-a-Rest BaseCamp self-inflating sleeping mat - Poseidon Blue - XL
Delivery $70.10
Therm-a-Rest BaseCamp self-inflating sleeping mat - Poseidon Blue - XL
Delivery $70.10
Therm-A-Rest BaseCamp Poseidon ležišče XL
Therm-A-Rest BaseCamp Poseidon madrats Therm-A-Rest BaseCamp Poseidon madrats XL
Therm-A-Rest BaseCamp Poseidon Mattress XL
Delivery between 20–23 Oct $31
Thermarest BaseCamp WV Mat, Poseidon Blue, X-Large
Delivery $28.47
Therm-a-Rest BaseCamp Self-Inflating Foam Camping Pad with WingLock Valve
Delivery between 20–24 Oct $41
Thermarest Basecamp Self-inflating Sleeping Pad - Poseidon Blue -
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!
| 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, 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 sleeping mat - Poseidon Blue - XL
Delivery by 23 Oct $95.73
Therm-a-Rest BaseCamp self-inflating sleeping mat - Poseidon Blue - XL
Delivery $70.10
Therm-a-Rest BaseCamp self-inflating sleeping mat - Poseidon Blue - XL
Delivery $70.10
Therm-A-Rest BaseCamp Poseidon ležišče XL
| Pad Length | Regular, Large |
| Pad Width | 76 cm (XLarge) |
| Sleeping Capacity | 1 |
| Pad Weight | 4 lb (XLarge) |
| Double | No |
