SPF 50 Polyester Elastic closure Key Features UPF 50 Sun protection Mesh venting promotes air flow Light as a feather -Moisture wicking head band - Adjustable draw cord for a great fit Adjustable chin strap. UPF 50 Protection The Sun Hat for men and women is rated UPF 50 to ensure you are protected from the suns harmful UVA and UVB rays. Wear this UV Sun Protection hat as a beach hat, fishing hat, hiking hat, golf hat, or safari hat. Cool and Comfortable We use light-weight, breathable material with vented mesh sides to help boost air flow. Helping to keep you cool, dry, and comfortable on those hot sunny days. Adjustable Fit This one-size fits most hat can be adjusted with the elastic draw string inside the head band and locked in place with the rear mounted toggle button. An adjustable chin strap ensures your hat will not be lost on a windy day. Moisture Wicking Head Band For extra comfort, the hat has a moisture wicking material sewn into head band. This helps to quickly absorb moisture and prevents sweat from distorting your vision or causing discomfort.