Therm-a-Rest NeoAir XTherm NXT Self-Inflating mattress-Large-Neptune
The Therm-a-Rest NeoAir XTherm NXT Large is an ultralight air-filled camping mat for alpinists, mountaineers, and extreme cold expeditions. The Large is the longest in the NeoAir XTherm NXT series, suitable for those up to 196cm/6ft5in. At 7.6cm thick, all-night comfort and support are a given, plus you can adjust inflation levels for personalised firmness. The NeoAir XTherm NXT Large boasts a fantastic warmth-to-weight ratio, achieving a cold-conquering 7.3 R-value while weighing just 567g. Its Core Matrix construction features individual triangular baffles that limit the free flow of air, slowing convective heat loss and creating a stable sleep surface. The ThermaCapture technology employs a featherweight reflective internal film that redirects heat back to your body. The glove-friendly WingLock Valve offers one-way inflation and rapid deflation for fast and efficient packing. You can use the pump sack for a breath-free inflation option, which stops condensation build-up. Supplied with instant repair patches, you'll be prepared for anything while you’re on the move.
The Therm-a-Rest NeoAir XTherm NXT Large is an ultralight air-filled camping mat for alpinists, mountaineers, and extreme cold expeditions. The Large is the longest in the NeoAir XTherm NXT series, suitable for those up to 196cm/6ft5in. At 7.6cm thick, all-night comfort and support are a given, plus you can adjust inflation levels for personalised firmness. The NeoAir XTherm NXT Large boasts a fantastic warmth-to-weight ratio, achieving a cold-conquering 7.3 R-value while weighing just 567g. Its Core Matrix construction features individual triangular baffles that limit the free flow of air, slowing convective heat loss and creating a stable sleep surface. The ThermaCapture technology employs a featherweight reflective internal film that redirects heat back to your body. The glove-friendly WingLock Valve offers one-way inflation and rapid deflation for fast and efficient packing. You can use the pump sack for a breath-free inflation option, which stops condensation build-up. Supplied with instant repair patches, you'll be prepared for anything while you’re on the move.
The Therm-a-Rest NeoAir XTherm NXT Large is an ultralight air-filled camping mat for alpinists, mountaineers, and extreme cold expeditions. The Large is the longest in the NeoAir XTherm NXT series, suitable for those up to 196cm/6ft5in. At 7.6cm thick, all-night comfort and support are a given, plus you can adjust inflation levels for personalised firmness. The NeoAir XTherm NXT Large boasts a fantastic warmth-to-weight ratio, achieving a cold-conquering 7.3 R-value while weighing just 567g. Its Core Matrix construction features individual triangular baffles that limit the free flow of air, slowing convective heat loss and creating a stable sleep surface. The ThermaCapture technology employs a featherweight reflective internal film that redirects heat back to your body. The glove-friendly WingLock Valve offers one-way inflation and rapid deflation for fast and efficient packing. You can use the pump sack for a breath-free inflation option, which stops condensation build-up. Supplied with instant repair patches, you'll be prepared for anything while you’re on the move.
The Therm-a-Rest NeoAir XTherm NXT Large is an ultralight air-filled camping mat for alpinists, mountaineers, and extreme cold expeditions. The Large is the longest in the NeoAir XTherm NXT series, suitable for those up to 196cm/6ft5in. At 7.6cm thick, all-night comfort and support are a given, plus you can adjust inflation levels for personalised firmness. The NeoAir XTherm NXT Large boasts a fantastic warmth-to-weight ratio, achieving a cold-conquering 7.3 R-value while weighing just 567g. Its Core Matrix construction features individual triangular baffles that limit the free flow of air, slowing convective heat loss and creating a stable sleep surface. The ThermaCapture technology employs a featherweight reflective internal film that redirects heat back to your body. The glove-friendly WingLock Valve offers one-way inflation and rapid deflation for fast and efficient packing. You can use the pump sack for a breath-free inflation option, which stops condensation build-up. Supplied with instant repair patches, you'll be prepared for anything while you’re on the move.
in 25 offers
The lowest price for Therm-a-Rest NeoAir XTherm NXT Self-Inflating mattress-Large-Neptune right now is $341.31 at Whittaker Mountaineering, compared across 23 retailers.
The all-time low was $307.85 on 3 Dec 2025 — today's price is 11% above the lowest ever. That's a little above the best price we've seen.
Prices last updated 31 July 2026.
Last updated at 31/07/2026 09:08:49
Therm-a-Rest NeoAir XTherm NXT Ultralight Camping and Backpacking Sleeping Pad, Neptune, Large
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 NeoAir Xtherm NXT Sleeping Pad
Delivery between 6–12 Aug $99.57
Isolation mats Thermarest NeoAir XTherm NXT 2025, L | blue
Delivery $90.40
Therm-A-Rest NeoAir XTherm Sleeping Pad Large / Neptune
Delivery $85.34
Therm-a-Rest NeoAir XTherm NXT inflating mattress-Large-Neptune
Delivery by 7 Aug $64.36
THERMAREST NeoAir XTherm NXT sleeping pad Large
Delivery $90.07
Thermarest NeoAir XTherm NXT Large
Free delivery
Therm-a-Rest NeoAir XTherm NXT Ultralight Camping And Backpacking Sleeping Pad, Neptune, Large
Delivery $28.43
Thermarest NeoAir XTherm NXT Sleeping Pad Large
Free delivery between 6–14 Aug
Thermarest NeoAir XTherm NXT Sleeping Mat Large
Free delivery
| Special feature | Lightweight, Compact, Insulated |
| Style | With Updated Storage Bag |
| Construction | NeoAir |
| Included Components | Pump Sack, stuff sack, repair kit |
| Maximum Weight Capacity | 1440 Pounds |
Therm-a-Rest NeoAir XTherm NXT Ultralight Camping and Backpacking Sleeping Pad, Neptune, Large
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 NeoAir Xtherm NXT Sleeping Pad
Delivery between 6–12 Aug $99.57
Isolation mats Thermarest NeoAir XTherm NXT 2025, L | blue
Delivery $90.40
Therm-A-Rest NeoAir XTherm Sleeping Pad Large / Neptune
Delivery $85.34
Therm-a-Rest NeoAir XTherm NXT inflating mattress-Large-Neptune
Delivery by 7 Aug $64.36
| Special feature | Lightweight, Compact, Insulated |
| Style | With Updated Storage Bag |
| Construction | NeoAir |
| Included Components | Pump Sack, stuff sack, repair kit |
| Maximum Weight Capacity | 1440 Pounds |
