The Proton SL is Arc'teryx's lightest active insulator - Octa synthetic fill under a stretch wind-resistant face fabric. Built to retain warmth while dumping moisture during high-output cold-weather use. Women's specific cut.
Jacket
CA$ 340
The Proton SL is Arc'teryx's lightest active insulator - Octa synthetic fill under a stretch wind-resistant face fabric. Built to retain warmth while dumping moisture during high-output cold-weather use. Women's specific cut.









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Women's Proton SL Hoody