The Arcteryx Proton FL Hoody is a breathable insulating jacket designed for alpine and rock climbing use. It has a Fortius Air 20 outer and inner which keeps the right balance between wind protection and breathability. Octa Loft insulation is breathable and designed to maintain a micro climate to keep you comfortable.
The low profile, fitted hood offers wind protection and is helmet compatible and adjustable. When worn under a harness the dual hem adjustments and HemLock keep it in place so that it doesn't come out even when reaching high. There are 2 zippered chest pockets and 2 zippered hand pockets to provide plenty of storage space for small items.
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