Mountain Equipment
Mountain Equipment Senja Jacket (men's)
- Warmth: 7/10 How warm it keeps you standing still at camp.
- Weight: 5/10 How much it adds to your pack.
Lowest price we found
£224.99 at Ultralight Outdoor Gear
Go to Ultralight Outdoor Gear Compare 3 shopsCool and cold days in the hills and winter valley days, with room for layers underneath
- Weight
- 580 g
- Insulation
- Down
- Fill weight
- 220 g
- Hood
- Yes
Where to buy
Ultralight Outdoor Gear £224.99 In stock. Free delivery. Page offer is in stock. It lists sizes but not stock for each size and colour pair. Lists 560 g for a Medium. Free tracked UK delivery.
View at shop: Ultralight Outdoor GearAlpinetrek £232.16 In stock. Free delivery. Size M in stock in the three colours listed. Lists 620 g. Price shown with duties and taxes included. Free UK delivery from £85.
View at shop: AlpinetrekMountain Equipment £250 In stock. Free delivery. Size M in stock in Mustard/Dusk, Admiral/Cosmos, Atlantic/Admiral and Obsidian. Free UK mainland delivery over £50 on its banner.
View at shop: Mountain EquipmentPrices checked 2 Nov 2026 to 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
Estimate from maker's specs: down fill weight and fill power 7/10How warm it keeps you standing still at camp. 7: Better than most.
Estimate from maker's specs
Weight
From maker's figures 5/10How much it adds to your pack. 5: Does the job. Average for wild-camping gear.
Mountain Equipment lists 580 g, in the 450-599 g band. No size is given, so this may not be the men's M weight; Ultralight Outdoor Gear lists 560 g for a Medium (same band) and 620 g for an XL. Alpinetrek lists 620 g for a medium, which would be the 600-799 g band, band 2 (3 out of 10) and equals Ultralight Outdoor Gear's XL figure. Mountain Equipment's published figure comes first, so we band it, and give the other figure here and in the weaknesses.
In short
Good for
- Cool and cold days in the hills and winter valley days, with room for layers underneath
- Mountaineering and Himalayan trekking
- Everyday use as well: a plain cut with a windproof outer
Strengths
- 220 g (size L) of 700 fill power duck down in stitched-through baffles
- Windproof 40D Drilite Loft outer with a DWR finish sheds snow and light rain
- Insulated helmet-compatible hood with an insulated collar and a two-way front zip with an insulated baffle
- RDS down, traceable through Mountain Equipment's Down Codex
Weaknesses
- 580 g is mid-weight for a down jacket (the 450-599 g band scores 5)
- Alpinetrek lists 620 g for a medium against Mountain Equipment's 580 g (Ultralight Outdoor Gear's table gives 560 g for a Medium and 620 g for an XL)
- No packed size published
- Warmth, damp performance and durability aren't scored: no independent test found
- 40D outer is not waterproof, and wet down loses loft
Sources
We haven't tested this ourselves. Every score comes from these specs, tests and reviews.