Flap Happy UPF 50+ Fun in the Sun Swim Hat 80% Nylon, 20% Spandex Made in US Hand Wash BLOCKS UV RAYS: UPF 50+ designation is the highest UV protection certification available which blocks 97.5%+ of cancer causing UV rays from penetrating the material. GOODBYE SUNBURNS: The wide brim design shades your precious little ones face, ears, and neck from the harsh sun, meaning more time having fun in the sun. COMFORT & QUALITY: UPF 50+ fabrics can be heavy and sweaty to wear, however, our fabric is lightweight and breathable to maximize comfort. 82% Polyester 18% Spandex, soft elastic allows for a snug & comfy fit. MULTIFUNCTIONAL: Never lose a hat again in the water. The foam brim and lightweight quick-dry fabric allows the hat to float if it falls into the water. The crushable brim collapses to provide an efficient use of space in your diaper or beach bag. CALIFORNIA BORN: For the last 30+ YEARS, weve been designing and testing our hats in sunny Santa Monica, California. This has given us the time and environment to PERFECT the hat fit and design.