Sea to Summit
Sea to Summit Ether Light XR Pro Insulated Air Mat (Regular)
Best use
- Made for
- Backpacking and wild camping
- Also works for
- Winter mountain
Why these labels
- Backpacking and wild camping: The maker states this use, and the published specs do not rule it out.
- Winter mountain: R-value 7.4
From the maker's stated use and the published specs.
- Summer wild camp: 8/10 UK, roughly May to September, nights above about 8 °C, sheltered pitches.
- Three-season hills: 8/10 UK hills in spring and autumn. Wind, rain, and nights near freezing.
- Winter camp: 9/10 UK winter or high ground. Below freezing, strong wind, possibly snow.
- Weight: 6/10 How much it adds to your pack, compared with the whole market.
R-value 7.4 (ASTM).
Winter wild camps and cold-ground trips where R 7.4 matters
- Valve
- XPRESS valve
- Baffles
- Air Sprung Cells
- Type
- Air
- R-value
- 7.4 (ASTM)
- Weight
- 560 g (Regular)
- Thickness
- 10 cm
- Size
- 183 x 55 cm
Packed size 2.4 L, 21 cm long and 12 cm across Compare with a 2-litre bottle
Shorter than a 2-litre bottle and a bit wider than one. Drawn to scale.
Where to buy
Blacks £208 In stock. Free delivery. Free delivery over £95.
View at shop: BlacksNeedle Sports £220.50 In stock. Free delivery. 10% off the £245 list price; 2 left when checked. Free delivery over £50.
View at shop: Needle SportsSea to Summit £245 Out of stock. Regular out of stock when checked. Free delivery over £75.
View at shop: Sea to SummitPrices checked 8 Nov 2026 on each shop's own page; shops can change them. We earn no commission on these links; shops are listed by price. More
Our ratings (out of 10)
1 to 10, compared with the whole market. Each says what it's based on. How we score
Warmth
From maker's figures 10/10How well it stops the cold ground chilling you. 10: The best you can buy for this.
Sea to Summit lists R 7.4 and says its R-values use the ASTM F3340-18 test: in the R 5.5+ band, a true winter mat.
Thickness
From maker's figures 10/10How deep it is. Deeper is comfier, above all for side sleepers. 10: The best you can buy for this.
10 cm thick.
Quietness
Estimate: only 1 review about noise (fewer than the 3 we need, so never above 8) 6/10How little it crinkles or squeaks when you turn over. 6: A bit better than average.
One review found it makes some noise when you move, though less than earlier versions.
Weight
From maker's figures 6/10How much it adds to your pack. 6: A bit better than average.
Sea to Summit lists 560 g for the mat and 620 g with its 60 g sack. Both are in the 550–749 g band; 560 g is only just over the 549 g line.
Packed size
From maker's figures 7/10How much room it takes in or on your rucksack. 7: Better than most.
Sea to Summit gives 21 x 12 cm and no litres: 3.1416 x 6 x 6 x 21 = 2,375 cm³, so 2.4 L, in the 1.5–2.4 L band.
What reviewers say (out of 10)
Ratings marked * are from reviews and are not part of the trip score. They are reviewers' scores, not our own measurements. How we score
Comfort*
Reviewers' average 7/10How comfy it is, including for side sleepers.
3 reviews on comfort, e.g. "It's very comfortable, incredibly warm, and very easy to set up.".
Stability*
Estimate: only 1 review about stability (fewer than the 3 we need, so never above 8) 8/10How well you stay on it without rolling off or bouncing.
1 review on stability, e.g. "We really like the soft face fabric of the Ether Light XR Pro, compared to other pads that sometimes can feel like sleeping on a slippery pool floatie.".
Durability*
Estimate: only 2 reviews about durability (fewer than the 3 we need, so never above 8) 7/10How well it resists punctures, leaks and worn valves over seasons of use.
2 reviews on durability, e.g. "Given the additional weight, we'd love this pad to be more durable.".
In short
Good for
- Winter wild camps and cold-ground trips where R 7.4 matters
- Cold sleepers who want a thick (10 cm) mat
- Backpackers who want a full-length winter mat that packs to about 2.4 litres
Strengths
- R 7.4, high warmth for 560 g
- 10 cm thick: OutdoorGearLab scored comfort 8.2 of 10
- Packs to 21 x 12 cm
- Comes with a 60 g stuff sack
Weaknesses
- OVR Mag found it noisy when you move
- At about -22 °C, one reviewer was disappointed with its comfort
- OutdoorGearLab said it would like the pad to be more durable
- Few independent durability reports, so durability is an estimate, not a reviewed score
Sources
We haven't tested this ourselves. Every score comes from these specs, tests and reviews.
ShowHide sources (4)
- Sea to Summit UK: Ether Light XR PRO Insulated Air Sleeping Mat, specifications (Regular)
- OutdoorGearLab: Sea to Summit Ether Light XR Pro Insulated review (Regular)
- OVR Mag: Warm Warriors, Sea to Summit Ether Light XR Pro sleeping pads review (Regular Wide and Large)
- Justin Outdoors on YouTube: I Test the Ether Light XR Pro Sleeping Pad in EXTREME COLD! (one night at about -22 °C)