Rab
Rab Xenair Alpine Light Insulated 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.
Lowest price we found
£159.99 at Ultralight Outdoor Gear
Go to Ultralight Outdoor Gear Compare 3 shopsFast summer hikes, scrambles and climbs as a technical outer, or a midlayer in cooler conditions
- Weight
- 310 g (M)
- Insulation
- Synthetic
- Hood
- Yes
Where to buy
Ultralight Outdoor Gear £159.99 In stock. Free delivery. Size M in stock in Black, Dark Pollen and Dark Army. Out of stock in Oak and Tempest Blue. Free tracked UK delivery. The shop gives 324 g for its medium.
View at shop: Ultralight Outdoor GearCotswold Outdoor £190 In stock. Free delivery. Size M in stock. Free next-day delivery over £125.
View at shop: Cotswold OutdoorRab £190 In stock. Free delivery. Size M in stock in all 6 colours (Black, Dark Army, Dark Pebble, Dark Pollen, Oak, Tempest Blue).
View at shop: RabPrices 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
Estimate from maker's specs: insulation weight (g/m²) 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.
Rab publishes 310 g for the men's medium, in the under 350 g band. Ultralight Outdoor Gear lists 324 g for its medium (a shop figure, not scored).
What reviewers say (out of 10)
Ratings marked * are from reviews and are not part of the trip score. They are reviewers' scores, not our own measurements. How we score
Damp weather*
Estimate: only 1 review about damp weather (fewer than the 3 we need, so never above 8) 8/10How well it stays warm when damp or in drizzle.
1 review on damp weather, e.g. "The shell fabric is very capable of weathering rain and snow, but isn’t waterproof.".
Fit*
Reviewers' average 8/10How well it fits and moves, over and under other layers.
3 reviews on fit, e.g. "The fit is “regular” and not too slim, so you can layer underneath the jacket.".
In short
Good for
- Fast summer hikes, scrambles and climbs as a technical outer, or a midlayer in cooler conditions
Strengths
- 310 g in size M, with dual-weight PrimaLoft Gold Active+ insulation that is lighter in hot spots
- Rab gives it top marks for lightness and breathability
- Sleeve articulation for climbs and scrambles, and a close-fitting hood that fits under a helmet
- Three zipped pockets, one an inner chest pocket that doubles as the stuff sack with a harness loop
Weaknesses
- Rab rates its insulation level low, so it is a light layer
- Rab gives pack size a middling rating and windproofing a good one
Sources
We haven't tested this ourselves. Every score comes from these specs, tests and reviews.