"Ready Oar Not" or "Busy Beaver." Protect your little ones from the sun with the Reversible Kids' Sun Hat. Crafted with 100% cotton, this hat provides UPF 50+ protection. It features a 2-in-1 reversible design, small and medium sizes come with reversible chin straps, and there are multiple sizes available (small: 6 mo-2 yrs, medium: 2-4 yrs, large: 4-6+ yrs). Large size does not have chin strap.