Exped
Exped Dura 6.5R (M, 183 x 52 cm)
Best use
- Made for
- Winter mountain
- Also works for
- Backpacking and wild camping
Why these labels
- Winter mountain: The maker states this use, and the published specs do not rule it out.
- Backpacking and wild camping: Light to carry: 0.6 kg
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 6.9 (ASTM).
Winter and shoulder-season camping and backpacking (R 6.9)
- Valve
- flat valve
- Type
- Air
- R-value
- 6.9 (ASTM)
- Weight
- 645 g (M)
- Thickness
- 9 cm
- Size
- 183 x 52 cm
Packed size 3.1 L, 23 cm long and 13 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
Alpinetrek £163.35 In stock. Free delivery. Flame, size M. Free UK delivery from £85.
View at shop: AlpinetrekGO Outdoors £185 In stock. Free delivery. Listed as one size, orange; its text gives the M figures. Free delivery over £80.
View at shop: GO OutdoorsPrices 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.
Exped lists R 6.9, labelled 'R-Value (ASTM)', in the R 5.5+ band: a four-season mat for winter camping.
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.
Exped gives 645 g for the M, in the 550-749 g band. Alpinetrek lists 710 g: same band.
Packed size
From maker's figures 6/10How much room it takes in or on your rucksack. 6: A bit better than average.
Exped gives a packed size of 23 x 13 cm: 3.1416 x 6.5 x 6.5 x 23 = 3,053 cm3, about 3.1 L, in the 2.5-3.9 L band.
In short
Good for
- Winter and shoulder-season camping and backpacking (R 6.9)
- Rough or stony ground, where the 170D base fabric helps
- Cold sleepers who want a thick 9 cm mat with quiet insulation
Strengths
- R 6.9 (ASTM) at 645 g
- 170D ripstop base and 75D top: the toughest base in Men's Journal's 2026 test
- 9 cm thick with raised side chambers to keep you centred
- Pump sack, two flat valves and a repair kit included; Exped gives a 5-year defects warranty
- Quiet insulation with no crinkle (Men's Journal)
Weaknesses
- Only one independent hands-on review, so comfort and durability are estimates, not reviewed scores
- Heavier than ultralight mats: 645 g and about 3.1 L packed
- Shop pages differ from Exped on some details (GO Outdoors says 8 cm thick, Alpinetrek says 710 g): Exped's own figures are used
Sources
We haven't tested this ourselves. Every score comes from these specs, tests and reviews.