One size fits all for this quintessential trucker hat. Featuring new stretch mesh back panels, a custom woven patch, and a snapback closure, the RIDGE(TM) TRUCKER will become your favorite hat for the long haul. One size fits all Snapback closure New poly mesh back panels with stretch Woven patch applique Front Panel/Brim: CottonBack Panel Mesh: Polyester Care Instructions To prevent sweat stains caused by salt and oil, rinse it regularly and air dry. To spot clean, use a drop of detergent (without bleach or bleach alternative) in water and be careful not to rub. Rinse with cool or lukewarm water, pat dry with a towel, and air dry away from the sun.