Alpkit
Alpkit Numo (182 x 46 cm)
Best use
- Made for
- Bikepacking, Backpacking and wild camping
- Not for
- Winter mountain
Why these labels
- Bikepacking: The maker states this use, and the published specs do not rule it out.
- Backpacking and wild camping: The maker states this use, and the published specs do not rule it out.
- Winter mountain: R-value 1.7: too little insulation on frozen ground
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: 4/10 UK hills in spring and autumn. Wind, rain, and nights near freezing. Capped at 4: needs warmth 5+ (R 3 or more).
- Winter camp: 4/10 UK winter or high ground. Below freezing, strong wind, possibly snow. Capped at 4: needs warmth 7+ (R 4 or more).
- Weight: 9/10 How much it adds to your pack, compared with the whole market.
R-value 1.7 (ASTM).
Lightweight summer backpacking when nights stay above about 8 °C
- Valve
- single valve
- Type
- Air
- R-value
- 1.7 (ASTM)
- Weight
- 350 g (182 x 46 cm)
- Thickness
- 8.5 cm
- Size
- 182 x 46 cm
Packed size 1.59 L, 25 cm long and 9 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 £44.99 In stock. Delivery £2.99. Pine in stock, black out of stock. 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 2/10How well it stops the cold ground chilling you. 2: A weak point.
Alpkit's R-value of 1.7 is under R 2: summer only. Alpkit's R-value guide says its figures follow ASTM F3340-22, though the Numo page does not repeat it.
Thickness
From maker's figures 8/10How deep it is. Deeper is comfier, above all for side sleepers. 8: Clearly better than most.
8.5 cm thick.
Quietness
Estimate: only 1 review about noise (fewer than the 3 we need, so never above 8) 8/10How little it crinkles or squeaks when you turn over. 8: Clearly better than most.
One reviewer says it didn't rustle or crinkle during the night.
Weight
From maker's figures 9/10How much it adds to your pack. 9: Among the best you can buy for this.
350 g with stuff sack and repair kit is under 400 g, the top band (one reviewer weighed 375 g).
Packed size
From maker's figures 8/10How much room it takes in or on your rucksack. 8: Clearly better than most.
Alpkit gives a pack 25 cm long and 9 cm across: 3.1416 x 4.5 x 4.5 x 25 = 1,590 cm³, about 1.59 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*
Estimate: only 2 reviews about comfort (fewer than the 3 we need, so never above 8) 8/10How comfy it is, including for side sleepers.
2 reviews on comfort, e.g. "for comfort and convenience it scores very highly indeed".
Stability*
Estimate: only 2 reviews about stability (fewer than the 3 we need, so never above 8) 8/10How well you stay on it without rolling off or bouncing.
2 reviews on stability, e.g. "the oversized air chambers on either side of the mat help to keep the sleeper centralised".
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. "Had two of these, the first one lasted 10 nights in the wild across a couple of trips then started leaking from the seams.".
In short
Good for
- Lightweight summer backpacking when nights stay above about 8 °C
- Bikepackers and hikers who want a thick, cheap, very small mat
- Adding a closed-cell foam mat underneath for cold nights, as reviewers advise
Strengths
- Very light at 350 g and packs to about 1.6 L
- About 8.5 cm of cushioning: reviewers slept well, including a side sleeper
- Wider outer air tubes help keep you centred on the narrow mat
- Made from 100% recycled 20D nylon, with a repair kit and a 3-year Alpine Bond guarantee
Weaknesses
- Not warm: R 1.7 is summer only on its own, and reviewers add a foam mat below near freezing
- Narrow at 46 cm, tapered, and 182 cm long, so taller or broader sleepers may feel cramped
- You blow it up by mouth, and the valve position makes it fiddly to squeeze out the last air
- One blog reviewer got a slow leak on a 10-night trek, and a flat air mat leaves you with no insulation
- Only two independent reviews, both from 2020–2021, so comfort and durability are estimates, not reviewed scores
Sources
We haven't tested this ourselves. Every score comes from these specs, tests and reviews.
ShowHide sources (6)
- Alpkit Numo: Alpkit product page (size, weight, packed size, R-value)
- Alpkit: What are sleeping mat R values (says its R-values follow ASTM F3340-22)
- Active Traveller: Alpkit Numo Mat (Daniel Wildey, frosty autumn night)
- These Vagabond Shoes: Gear Review, Alpkit Numo Sleeping Mat (10 nights on the TGO Challenge)
- Alpkit customer reviews: Numo (335 reviews, 4.2 out of 5)
- Alpkit customer reviews: Numo (336 reviews, 4.2 out of 5)