The Pack Run Cap R-Wira Multi by Buff is a functional addition to your running clothing, made of a breathable and quick-drying material mix for a high level of comfort during sporty and intense outdoor activities – maximum breathability thanks to Fastwick Extra + fabric on the sides – reflective details for more Visibility- ?? smarter ??Umbrella that always jumps back to its original shape – packs down small, folds in the hand and retains its shape when unpacking – small adjustable cord made of silicone for optimal fit – care instructions: machine washable at 30 degrees.