Adjustable Size - An elastic back adjusts to baby's head and grows with them. Customize the fit by adjusting the tie strap around baby's chin. Breathable Liner - An imbedded liner absorbs moisture to keep baby cool and comfortable. UV Protection Clothing - Full-coverage flap sun hats offer all-day sun protection by blocking UV rays. Machine Washable - Wash cold, tumble dry low. Do not iron. Travel-Friendly - Our foldable design makes packing easy for on the go. Meets Standard 100 by OEKO-TEX certification - Our sun hats have been independently tested against a list of over 350 harmful substances for your baby’s health and safety. Made in BSCI-compliant factories - Our sun hats are manufactured in factories that follow international labor practices to protect workers’ rights.