Alpkit
Alpkit Radiant (194 x 62 cm)
Where it fits
- Also works for
- Backpacking and wild camping, Winter mountain
Why these labels
- Backpacking and wild camping: Light to carry: 0.6 kg
- Winter mountain: R-value 7.2
From the maker's stated use and the published specs.
- Summer wild camp: 7/10 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 7.2 (ASTM).
Winter and cold-weather wild camps, down to well below freezing
- Baffles
- split baffles
- Type
- Air
- R-value
- 7.2 (ASTM)
- Weight
- 640 g (194 x 62 cm)
- Thickness
- 9 cm
- Size
- 194 x 62 cm
Packed size 2.38 L, 25 cm long and 11 cm across Compare with a 2-litre bottle
About as long as a 2-litre bottle and about as wide as one. Drawn to scale.
Where to buy
Alpkit £109.99 In stock. Free delivery. Free delivery over £60.
View at shop: AlpkitPrices 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.
Alpkit's R-value of 7.2, which it states is an ASTM F3340-22 figure, is in the R 5.5+ band.
Thickness
From maker's figures 9/10How deep it is. Deeper is comfier, above all for side sleepers. 9: Among the best you can buy for this.
9 cm thick.
Quietness
Estimate from maker's specs: mat type (fewer than 3 reviews about noise) 5/10How little it crinkles or squeaks when you turn over. 5: Does the job. Average for wild-camping gear.
No review we found says how noisy it is, so this is an estimate from the mat type.
Weight
From maker's figures 6/10How much it adds to your pack. 6: A bit better than average.
640 g for the mat alone is in the 550–749 g band. The 100 g pump sack and 15 g stuff sack are extra: with them it is about 755 g, which would be band 2.
Packed size
From maker's figures 7/10How much room it takes in or on your rucksack. 7: Better than most.
Alpkit gives a pack 25 cm long and 11 cm across: 3.1416 x 5.5 x 5.5 x 25 = 2,376 cm³, about 2.38 L, in the 1.5–2.4 L band, only just. The Great Outdoors measured 38 x 11 cm rolled into the pump sack (about 3.6 L).
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 9/10How comfy it is, including for side sleepers.
3 reviews on comfort, e.g. "a mat needs to be comfortable as well as warm for a good night’s sleep and the Radiant is excellent".
Stability*
Reviewers' average 7/10How well you stay on it without rolling off or bouncing.
3 reviews on stability, e.g. "it also helps keep me on the mat compared with tubular designs, where I find I can roll off more easily".
Durability*
Estimate: only 1 review about durability (fewer than the 3 we need, so never above 8) 4/10How well it resists punctures, leaks and worn valves over seasons of use.
1 review on durability, e.g. "Lasted 5 nights of use before leaking at almost every spot weld on the top of the mat".
In short
Good for
- Winter and cold-weather wild camps, down to well below freezing
- Cold sleepers and side sleepers who want a warm, thick, wide mat
- Replacing a mat plus foam pad combination with one lighter mat
Strengths
- R 7.2 at 640 g: very warm for the weight, with a reflective layer inside the mat
- Rectangular and 62 cm wide with 9 cm of thickness, so there is room to move
- 20 L pump sack included: about five squeezes to fill it (one video reviewer), and no breath moisture inside the mat
- Recycled nylon fabric that only crackles a little (The Great Outdoors), a field repair kit and a 3-year Alpine Bond guarantee
Weaknesses
- One video reviewer found the single valve fiddly to deflate and to adjust firmness
- Thick (9 cm) and 194 cm long, so it takes up space in a one-person tent and long sleepers' feet may touch the end
- Packs bigger than a summer mat, and the pump sack adds 100 g
- Only one size
- No long-term durability report found, 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 (6)
- Alpkit Radiant: Alpkit product page (size, weight, packed size, R-value)
- Alpkit: What are sleeping mat R values (states the Radiant's R 7.2 is an ASTM F3340-22 figure)
- The Great Outdoors: Alpkit Radiant review (Chris Townsend, Scottish Highlands, +10 to -5 °C)
- Alec King (YouTube): I Can't Believe How Much This Improved My Camping! (Radiant review after a wild camp)
- Rambling Trails (YouTube): Testing The Alpkit Radiant sleep mat on a wildcamp at The Wye Downs (findings from the video description; no captions available)
- Alpkit customer reviews: Radiant (145 reviews, 4.4 out of 5)