Flap Happy Unisex Baby Upf 50 Plus Original Flap Hat 100% Cotton 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 front brim and long neck flap is designed to shade your precious little ones face, ears, and neck from the harsh sun, meaning more time having fun in the sun. COMFORT & QUALITY: We developed our fabric to be lightweight & breathable for maximum comfort & protection. GENTLE: 100% Cotton provides only the gentlest touch. 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. Light Weight 100% Cotton Machine wash cold and hang to dry Head Circumference: 14 inch to 17 inch