If you spend lots of time in the sun, flap hats are an excellent way to protect your face and neck from harmful UV radiation. Our Hayden Chlorine Resistant All Sport Hat is made from an exclusive fabric that doesn't fade or break down when exposed to pool or saltwater. And like any Coolibar sun hats, this SPF hat is lightweight and comfortable for all-day wear. NOT RECOMMENDED FOR: active fitness, not moisture-wicking and may cause overheating RECOMMENDED FOR: your days in the water, at the pool, lake or ocean - great for leisurely lap swims or water aerobics FEATURES: Travel friendly packable, crushable construction; Attached drape for neck protection and 4 1/4 inch brim for maximum face and neck coverage; Circumference: 24 1/2 inches; Hidden drawcord for a custom fit; Hand wash; Imported DERMATOLOGIST ENDORSED: First company honored with the Skin Cancer Foundation Seal of Recommendation and trusted by top dermatologists COOLIBAR SUN PROTECTION: Leading Sun Protection Company worldwide, guarantees UPF 50+ apparel blocking 98% of UVA and UVB rays.