Lightweight cap for protection from the sunYou want protection from the sun when trail running, fast hiking or during other sweaty mountain activities. With the Aenergy Light Cap, you have an extremely light 5-panel cap in your bag. A drawstring and stopper on the back allow you to adjust the size ideally to your head. A flexible visor allows the cap to be folded for compact storage. material: recycled polyester adjustability: drawstring style: cap claimed weight: 1.5oz (43g) activity: run & training