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This is a technical, premium, ultralight jacket with a standout design. Unlike classic soft shells which all have that distinctive soft shell outer material, made from a stretchy, sturdy and wind-resistant nylon or polyester - the Vapour-Rise Summit does things differently. The outer is constructed from Pertex Quantum Air, a highly breathable, open woven fabric which prioritises air permeability above wind- resistance. This enables you to dump heat and regulate your temperature far more effectively during intense activity, while the inner - a fleecy brushed polyester lining hat's pretty thick and cosy - delivers a noticeable warmth boost when needed. The overall ethos is to provide a 2-layer system that replaces the need for two separate garments (such as a micro- fleece and windproof), and to create a micro-climate that works all day - "warm at the peak and comfortable during intense activity", as Rab puts it. Features include an adjustable hood, waist drawcords, three pockets, Velcro cuffs, and a DWR finish.

IF WE'RE BEING FUSSY

It's too toasty for warmer days (the Vapour-Rise Alpine Light is a less-insulated alternative). The breathable Pertex Quantum Air outer is not particularly good at blocking out the wind, and the Pertex outer feels more delicate/less durable than stronger, classic soft shell outers. Little to no stretch.

Verdict

A proven 'put it on, leave it on' layer combining a Pertex outer with a  fleecy inner - but not so great at wind-resistance.