Mountain Equipment
Mountain Equipment Aerostat Synthetic 7.0 Mat (Regular, 185 x 54 cm)
Best use
- Made for
- Backpacking and wild camping
Why these labels
- Backpacking and wild camping: The maker states this use, and the published specs do not rule it out.
From the maker's stated use and the published specs.
- Summer wild camp: 5/10 UK, roughly May to September, nights above about 8 °C, sheltered pitches.
- Three-season hills: 6/10 UK hills in spring and autumn. Wind, rain, and nights near freezing.
- Winter camp: 6/10 UK winter or high ground. Below freezing, strong wind, possibly snow.
- Weight: 5/10 How much it adds to your pack, compared with the whole market.
R-value 4 (ASTM).
Cold-shoulder-season and winter wild camps where a warm, hard-wearing mat matters more than weight
- Valve
- 2-way self-sealing Gas Mask valve
- Baffles
- vertical baffles
- Type
- Air
- R-value
- 4 (ASTM)
- Weight
- 670 g (Regular)
- Thickness
- 7 cm
- Size
- 185 x 54 cm
Packed size 4.3 L, 28 cm long and 14 cm across Compare with a 2-litre bottle
About as long as a 2-litre bottle and a bit wider than one. Drawn to scale.
Where to buy
Alpinetrek £112.46 In stock. Free delivery. Price shown as including duties and taxes. Free delivery from £85; ships in 5–7 working days.
View at shop: AlpinetrekMountain Equipment £150 Out of stock. Ombre Blue; free UK mainland delivery over £50.
View at shop: Mountain EquipmentUltralight Outdoor Gear £124.99 Out of stock.
View at shop: Ultralight Outdoor GearPrices 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 7/10How well it stops the cold ground chilling you. 7: Better than most.
Mountain Equipment's R-value of 4.0, tested to ASTM F3340, is in the R 4–5.4 band: three-season and winter use with a warm bag.
Thickness
From maker's figures 7/10How deep it is. Deeper is comfier, above all for side sleepers. 7: Better than most.
7 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 5/10How much it adds to your pack. 5: Does the job. Average for wild-camping gear.
Mountain Equipment's 670 g for the Regular sits in the 550–749 g band (shops list 601–665 g without the Windsock).
Packed size
From maker's figures 4/10How much room it takes in or on your rucksack. 4: A bit below average.
Alpinetrek's spec table gives 28 x 14 cm packed: 3.1416 x 7 x 7 x 28 = 4,310 cm³, so 4.3 L, in the 4–6.9 L band. Mountain Equipment's own page gives no packed size.
In short
Good for
- Cold-shoulder-season and winter wild camps where a warm, hard-wearing mat matters more than weight
- Hikers who want an insulated air mat that is not made of thin ultralight fabric
- Using with a three-season sleeping bag by adding R 4.0 underneath
Strengths
- R 4.0 (ASTM F3340) in a 7 cm thick mat with 160 g/m² synthetic fill
- 30D recycled ripstop polyester with TPU lamination, tougher than the 15–20D shells on many ultralight mats
- The Windsock stuff sack inflates the mat without breath moisture going in
- Two-way valve for inflating and deflating; repair kit supplied
Weaknesses
- 670 g is heavy for an R 4 mat; some ultralight R 4 mats weigh around 430–500 g
- Packs to about 4.3 L, bigger than an ultralight mat
- No independent reviews of the Synthetic version found, 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.