Arc'teryx Unisex Phase AR Beanie Black Hat LG/XL PHASE AR BEANIE - Technical material and one piece pattern fits the head and retains form without binding. Quick dry fabric manages moisture the same as a base layer piece, moving it to the outside so head feels dry ARC'TERYX ESSENTIALS - Versatile high performance designs for diverse activities and conditions. PHASE - Quick dry base layer with excellent moisture management. For high output activities.