It floats, repels rain, blocks out UV rays UPF 50 and it won't shrink. The Tilley Airflo is made for those need to stay as cool as possible in the blazing sun. . Tilley Airflo provides sun protection in a lightweight construction. Engineered from Tilley Nylamtium, a strong water and mildew resistant form of nylon. Mesh panel in the crown allows coolness and comfort during hot days and strenuous activities. Layer of closed cell foam in the crown provides the Tilley Airflo with positive buoyancy in case your canoe flips over. Broad 3 inch brim blocks the sun. Brim retains stiffness even when wet to help keep the rain off. Softly textured Hydrofil anti sweat band wicks away moisture to the temple area where it evaporates. Includes a four page owner's manual tucked away in the security pocket underneath the crown. Comes in multiple sizes. S 7 18 M 7 14 L 7 38 XL 7 12. Made in Canada.