Adjustable size: one size fits most from 56-61cm,7-7 5/8, 22"-24" with an adjustable velcro strap at back.
UPF 50: its fabric has passed SPF test, front 3"inch wide bill providing great sun uv protection.
Breathable & quick-drying & lightweight 100% nylon fabric, keep cool in summer, easy to maintain.
Packable:crushable and could be folded up easily to pack into a bag or even pocket.
Lightweight & breathable, 4 sides-mesh openings in the crown allow air to flow freely and work to keep you dry,comfortable,breathable in summer and provides a good perforamnce for travel and outdoor activities such as running,hiking,fishing,golf,boating.......