Construction 100% lightweight Supplex that is rated SPF 60+ sun safe! The removable Velcro cape can be worn across the shoulders or taken off on cloudy days. The mesh vents on the sides allow the head to cool off without sacrificing sun exposure. The long bill is rigid so it won't buckle under high wind conditions. Now - when fastened in the front, the wind cannot blow this protective cape out of place (the major flaw with all other cape sun hats.) Adjustable strap for "one-size fits all".