The Gamma Lightweight is Arc'teryx's lightest Gamma softshell, built from stretchy Fortius 1.0 double-weave fabric that resists wind, sheds light moisture and breathes well. It adds UPF 50+ sun protection and four zippered pockets in a regular fit that leaves room for a light layer. At about 320 g it is a warm-weather shell, not a rain jacket. Against burlier softshells like the Gamma MX or Gamma LT it trades warmth and weather protection for breathability and packability, so it suits fast hiking, climbing approaches and travel rather than cold or wet days. Owners of Arc'teryx softshells generally rate the fit and fabric highly.
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Owners of the Gamma line praise the stretch, breathability and clean fit of the lightweight version for warm-weather activity. Common complaints are that it is thin for the money and that it handles only light rain.
The Gamma Lightweight Jacket from Arc'teryx is the brand's lightest Gamma Jacket. It is a softshell made for warmer days across a range of terrain and activities.
It is made from Fortius 1.0 fabric, a stretchy double weave that is wind resistant and water repellent. The fabric breathes well and lets air flow to release excess heat.
The jacket has a regular fit with room for light layers. It has a full front zip, two zippered chest pockets and two zippered hand pockets.
