Baby Banz Sunhat, Hibiscus Blue Poly-cotton blends PF (ultraviolet protection factor) rating of 50+ andwill block out more than 97.5% of UVA and UVB rays Broad brim keeps sun off child's face, neck and forehead Adjustable headband for a comfortable fit Sized for babies 0 - 2 Banz Hatz has been clinically tested to Australian Standards for Fabric UV protection and has a UPF rating of 50