Product material: cottonSize: S, LS: 44~48cm (March~18 months):Whale,Crab,SunL: 48~54CM (2~5 years old):Whale,Crab,SunQuantity: 1 piecePackage content: 1*baby sun hat1.SAFETY RELEASE CHIN STRAP:Safety first Emergency release will help prevent a dangerous choking hazard. If you have a newborn boy or newborn girl and love spending time outdoors this sun hat is right for you The cap in front protects the eyes and face and the back protects the neck2.Prevent sun protectionSun protection for head, neck, and eyesOur full-coverage, wide brim sun hat keeps baby covered all-day, reducing sunscreen application in those areas.3.Comfortable And Breathable Sunhats - whether bucket hat, brimmed or flap hat, you need to make sure you are buying one that can provide superior protection from the sun. Lightweight, quick-dry material keeps baby comfortableOur baby sun protection hats are made from soft, microfiber material with a wicking liner to pull moisture away from skin to keep baby cool.4.AdjustableThere is a rope at the back, which can be extended and retracted to adjust the size of the hat.5.High quality material:Breathable mesh, baby's skin-friendly lining.Mesh vent will further allow air flow and comfort.