Baby Toddler Kids Summer Aqua-Dry Swim Sun-Hats with 50 UPF Protection, Head Size Adjustable, Quick-Dry &#9733; Drawstring head adjustment makes good fit and longer use &#9728; 50+ UPF aqua dry polyester for best sun protection and comfort &#9733; Chin strap with easy toggle adjustment and breakaway safety clip &#9733; Packable for easy storage and travel &#9728; Head size up to 44cm(17") for S, 49cm(19") for M, 52cm(20.5") for L, 56cm(22") for XL