With the outdoor functionality and the year round comfort of the Columbia ROC Ballcap, it is for sure the go-to for an everyday hat. Omni-Shade UPF 50 provides protection from the sun. Hook and loop closure for a perfect fit. Hand wash cold, line dry. 100% cotton. Imported. Measurements: ; Brim: 2 3 4 in ; Product measurements were taken using size One Size (6 5/8-7 3/4). Please note that measurements may vary by size.