Cocoon
Cocoon Air-Core Pillow Hyperlight (38 x 28 x 9 cm)
- Weight: 8/10 How much it adds to your pack.
- Packed size: 10/10 How much room it takes in your rucksack.
Backpackers who want a soft nylon shell and a thin layer of fill over an air core, at 77 g
- Type
- Hybrid
- Weight
- 77 g
- Height
- 9 cm
- Size
- 38 x 28 cm
Packed size 0.37 L, 11 cm long and 6.5 cm across Compare with a 2-litre bottle
Shorter than a 2-litre bottle and thinner than one. Drawn to scale.
Where to buy
Alpinetrek £27.16 In stock. Delivery £4.49. Black / Dark Blue, 28 x 38 cm; the shop shows an original price of £33.95; delivery time 5-7 working days; free delivery from £85.
View at shop: AlpinetrekUltralight Outdoor Gear £33.99 In stock. Free delivery. Free tracked UK delivery.
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
Weight
From maker's figures 8/10How much it adds to your pack. 8: Clearly better than most.
Brand lists 77 g (its US site about 76.5 g), in the 70–119 g band. Ultralight Outdoor Gear lists 82 g without the stuff sack (same band).
Packed size
From maker's figures 10/10How much room it takes in your rucksack. 10: The best you can buy for this.
Brand gives a packed size of 11 cm long and 6.5 cm across: 3.1416 x 3.25 x 3.25 x 11 = 365 cm³, about 0.37 L, in the under 0.6 L band. The brand's US site gives about 10 x 7.6 cm, about 0.46 L (same band).
In short
Good for
- Backpackers who want a soft nylon shell and a thin layer of fill over an air core, at 77 g
- Washing: the air bladder comes out through a side zip
- Sleeping in a hooded bag, where the small pack size matters more than a large surface
Strengths
- 77 g and about 0.37 L: packs to 11 x 6.5 cm
- Super-light 7-denier nylon shell over a layer of synthetic fill, with an air core underneath
- Check valve with a flat cap lets you let air out to tune the firmness
- Air bladder is removable, so the cover can be hand-washed
- Stuff sack included
Weaknesses
- No independent test of the current pillow: comfort and durability are estimates, not reviewed scores
- No pad-attachment system on the brand's page, so a smooth nylon shell may slide on a slick mat
- Very thin 7-denier fabric: no wear reports for the current version
- Brand figures differ between its Austrian and US sites (38 x 28 x 9 cm against about 28 x 41 cm, with no thickness on the US page)
Sources
We haven't tested this ourselves. Every score comes from these specs, tests and reviews.