Athleta Ultra Light Running Cap 3.0 FOR: Hike, long distance, short distance, and trail running FEEL: Lightweight Ripstop has two-way stretch for extra mobility FAVE: Adjustable strap on back for customizable fit Ripstop Nylon WICKING: Pulls sweat away from the body to the surface of the fabric so it can evaporate QUICK-DRYING: Dries in a flash for ultimate comfort when breaking a sweat BREATHABLE: Airflow moves easily through the garment Hand wash and line dry.