Sea to Summit Sleeping Mat Ranges Explained
Posted by Mark Richardson on Aug 07, 2026
Ultralight XR
The Sea to Summit Ultralight XR Insulated Air Mat delivers advanced warmth, comfort, and packability in a true ultralight design. This next-generation insulated sleeping mat is 14% lighter, 30% thicker, and 16% more insulative than before—making it ideal for backpacking, bikepacking, and fast-moving adventures. Featuring Air Sprung Cell™ technology, the Ultralight XR conforms to your body for even support and fewer pressure points, providing superior comfort for side sleepers and active sleepers alike.
Ultralight Sleeping Mat
The Ultralight sleeping mat range has a single layer of medium resolution Air Sprung Cells™ to give you the lightest and smallest packed-volume mat without compromising comfort. These mats are ideal when going light and fast is your aim and getting a great night's sleep is essential for the next day's adventure. All Sea to Summit sleeping mats come with a quality stuff sack, a repair kit containing six self adhesive patches for repairing punctures in the field, and a spare silicone one-way valve flap.
Ether Light XR Insulated ASC Sleeping Mat
The latest iteration of the Sea to Summit Ether Light XR Insulated ASC Sleeping Mat brings a series of refinements that improve warmth and packability. The most significant change is the shift from down insulation to the new Thermal Core insulation, which uses multiple layers to reflect body heat while reducing air movement inside the mat, increasing thermal efficiency.
With an R-value of 4.1, this mat is capable of year-round use, providing enough insulation for cold conditions while remaining light enough for milder weather. While true winter expeditions may require additional insulation, it’s well-suited for three-season adventures and moderate winter camping.
Ether Light XR Insulated ASC Sleeping Mat - Small (R-Value: 4.1, Weighs: 464g ex bag)
Ether Light XR Insulated ASC Sleeping Mat - Regular (R-Value: 4.1, Weighs: 482g ex bag)
Ether Light XR Insulated ASC Sleeping Mat - Long (R-Value: 4.1, Weighs: 634g ex bag)
Ether Light XR Insulated ASC Sleeping Mat - Long Rectangular (R-Value: 4.1, Weighs: 688g ex bag)
Ether Light XR Pro Insulated ASC
Building on the strengths of its predecessors, the Sea to Summit Ether Light XR Pro Insulated ASC Sleeping Mat delivers a notable upgrade in design and functionality for cold-weather camping. A key improvement is its impressive R-value of 7.4, up from 6.2, ensuring reliable warmth in sub-zero temperatures—ideal for winter expeditions.
The introduction of Thermal Core technology enhances insulation efficiency by reflecting infrared energy back to the sleeper, maximising warmth without adding unnecessary bulk. Additionally, the mat’s construction now features double the weld strength of previous models, significantly boosting durability for extended use in harsh conditions.
Ether Light XR Pro Insulated ASC Sleeping Mat - Small (R-Value: 7.4, Weighs: 543g ex bag)
Ether Light XR Pro Insulated ASC Sleeping Mat - Regular (R-Value: 7.4, Weighs: 577g ex bag)
Ether Light XR Pro Insulated ASC Sleeping Mat - Long (R-Value: 7.4, Weighs: 740g ex bag)
Ether Light XR Pro Insulated ASC Sleeping Mat - Long Rectangular (R-Value: 7.4, Weighs: 814g ex bag)
Pursuit Self Inflating Mat
This is impressively light for a self-inflating mat. This mat employs Horizontal Delta Coring to remove 40% of the foam, creating supportive air-filled channels that enhance comfort while reducing weight and packed volume. The Contour shape provides additional width at the shoulders, offering more room for side sleepers without the added weight of a full rectangular mat.
The XPEL Valve System simplifies inflation and deflation. Its flip-over design prevents air from re-entering during deflation, making packing more straightforward. While the mat is lightweight, it doesn't compress as tightly as some ultralight airbeds, but it's impressive just how small this self-inflating mat compresses.
Pursuit Self Inflating Mat - Regular Contour (R-Value: 3, Weighs: 583g ex bag)
Pursuit Self Inflating Mat - Long Contour (R-Value: 3, Weighs: 734g ex bag)
Pursuit Self Inflating Mat - Regular Rectangular Wide (R-Value: 3, Weighs: 754g ex bag)
Pursuit Self Inflating Mat - Long Rectangular Wide (R-Value: 3, Weighs: 990g ex bag)
Pursuit Plus Self Inflating Mat
It’s remarkably comfortable for a mat in this category, thanks to its 7.5cm thickness and supportive foam core. The Horizontal Delta Coring trims down unnecessary bulk while maintaining a cushioned feel, which I found particularly welcome when camping on uneven ground. The mat feels noticeably warmer than thinner options, with an R-value of 4.2 providing reassuring insulation for trips into the figures.
I appreciated the straightforward XPEL Valve System—inflating was hassle-free, and deflating was simple. It packed down smaller than I’d expect for a self-inflating mat this thick, though it still takes up a bit more space than an ultralight airbed. That’s the trade-off for not needing to blow it up manually.
Pursuit Plus Self Inflating Mat - Regular (R-Value: 4.2, Weighs: 777g ex bag)
Pursuit Plus Self Inflating Mat - Regular Rectangular Wide (R-Value: 4.2, Weighs: 1036g ex bag)
Pursuit Plus Self Inflating Mat - Long (R-Value: 4.2, Weighs: 1040g ex bag)
Pursuit Plus Self Inflating Mat - Long Rectangular Wide (R-Value: 4.2, Weighs: 1377g ex bag)
Comfort Deluxe Self Inflating Mat - Camper Van
At 2532g, it’s clearly not built for hiking packs, but it's a standout for van setups or base camps. The 10cm thickness makes uneven surfaces disappear beneath you, and with an R-value of 6.5, I found it reliably warm even in chilly conditions. The stretch-knit top fabric adds a soft, home-like feel that I appreciated when sleeping directly on it without a sheet or liner.
The updated valve design makes inflating and deflating refreshingly straightforward—I didn’t have to fight with trapped air to get it rolled away. The packed size is still sizeable, so I’d want to factor in storage space if using it in a smaller van or tent, but for static use, it’s a trade-off I’d happily make for the comfort gain.
We stock the key ranges of Sea to Summit sleeping mats, find out which they are and what they do on this page.