【BREATHABLE & COMFORTABLE 】Our upf 50+ newborn baby sun protection hats are made of premium 100% polyester. the mesh vent around the crown provides ventilation, so it is breathable, quick-drying, and lightweight, Your little one will stay comfy and cool as they barely feel like they're wearing this newborn sun hat.【UPF 50+ PROTECTION】Blocks 95% of UV Rays(mesh vents not rated).Shield your toddler’s head, eyes, face, and neck from the harsh sun with this infant sun hat’s UPF 50+ element, which offers extra protection. which means more time for outdoor activities.【WIDE BRIM DESIGN】The bucket hat with a wide brim protects eyes and face from UV, Fastener chin strap with an adjustable chin cord holds the hat in place even in windy or rainy conditions, You can also buckle the buttons on both sides of the hat to make a cowboy/cowgirl hat and make kids cool.adjustment makes good fit and longer use.【FOLDABLE &PACKABLE】 Its lightweight and foldable design makes the toddler sun hat convenient and easy to take on the go for vacations and trips, saving you lots of space. Cute and chic designed sun hat is easy to wear and pair with other clothes. Perfect for kids' summer outdoor activity, on the beach, park, poolside, campsite, and so on.【MULTIPLE COLORS&SIZE 】Wide brim enough to shade forehead, eyes, and cheeks from sun UV rays. The shape looks really adorable, which means more time for outdoor activities. Wide range of color and size options, baby sun hat 50cm/19.7” girth fits most babies ages 6-12/ 12-24 months. The age is only for reference, you can choose sizing according to your baby's head girth.