Ayacucho
Ayacucho Mountain Lightweight Down Jacket (men's)
- Warmth: 5/10 How warm it keeps you standing still at camp.
- Weight: 9/10 How much it adds to your pack.
Cold-weather walking and camp evenings as a light down layer under or over a shell (Cotswold lists it for mountaineering, outdoor pursuits and travel)
- Weight
- 329 g (not stated)
- Insulation
- Down
- Hood
- Yes
Where to buy
Cotswold Outdoor £76.89 In stock. Delivery £6.95. Moonlight Blue, size M in stock (RRP £140). Cotswold is Ayacucho's own shop. Free next-day delivery over £125, £6.95 below. Jungle Green, Moss and Asphalt: M in stock at £100. Mediterranea: only size S left, £76.89.
View at shop: Cotswold OutdoorSnow+Rock £76.89 In stock. Delivery £6.95. Moonlight Blue, size M in stock. Free next-day delivery over £125, £6.95 below that (help article).
View at shop: Snow+RockPrices checked 1 Nov 2026 to 2 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
Estimate from maker's specs: fill type and jacket weight (no fill figures published) 5/10How warm it keeps you standing still at camp. 5: Does the job. Average for wild-camping gear.
Estimate from maker's specs
Weight
From maker's figures 9/10How much it adds to your pack. 9: Among the best you can buy for this.
Cotswold lists 329 g, in the under-350 g band. It names no size, so this may not be the men's M weight; Cotswold's women's version of this jacket lists 281 g, so 329 g reads as the men's figure.
In short
Good for
- Cold-weather walking and camp evenings as a light down layer under or over a shell (Cotswold lists it for mountaineering, outdoor pursuits and travel)
- Carrying a warm layer for little weight: 329 g, packing into its own pocket
Strengths
- 329 g, in the under-350 g weight band
- 600 fill hydrophobic down: Ayacucho says it keeps you insulated even in wet weather, but publishes no test of this
- Adjustable hood, waist and cuffs, a storm guard and two zipped side pockets
- Shell is 100% GRS recycled polyamide with a PFC-free DWR; Ayacucho lists it as easy to repair
Weaknesses
- Warmth, damp performance and durability aren't scored: no independent test of this jacket found
- No packed size, fill weight, fill power test method or fabric denier published
- The page names the down only as "90/10 Rewardown" and doesn't say whether it is duck or goose, or give a down standard
- No size given for the 329 g weight
- Sold only by Cotswold and Snow+Rock, which are one group
Sources
We haven't tested this ourselves. Every score comes from these specs, tests and reviews.