Our sun hats with neck protection area great for protecting those little kids in and around the water. They offer UPF 50 protection. The hat is made of UPF 50 nylon spandex, so it feels like a bathing suit. The hat fits less snug than our original swimlid but offers many of the same benefits. UPF 50 sun protection. Fun prints for the kids. Neck protection. Lightweight and very packable. Quick-drying. Sizing: Small – infant.