The Columbia Sportswear Bora Bora Booney II is a full brimmed UV blocking sun hat with a certified UPF 50 rating that delivers 360 sun protection. An Omni Wick sweatband combines with a mesh vent panel which is non UPF to keep you cool and the sweat from dripping in your eyes. Quick dry properties mean that even if this hat takes a dunk with you, it'll be dry in no time. An adjustable toggle customizes the hat's fit to your head and an adjustable chinstrap adds further security. Constructed of 100% textured nylon poplin, 100% polyester mesh lining. Omni Shade UPF 50 sun protection keeps you safe from harmful UV rays. Omni Wick advanced evaporation sweatband. Quick dry performance. Vented to keep you cool and dry. Adjustable chin strap keeps hat in place on breezy days. Adjustable draw cord and toggle at back for a custom fit. Brim width: 3. Import.