Saving the planet, one peace-sign at a timeDesigned with kids in mind, our snapback features an adjustable snap closure to ensure a snug and secure fit.The distinctive hard crown and flat brim are the hallmarks of Headster Kids, offering long-lasting wear and serving as our signature style.We believe in the power of recycling, which is why we've chosen to use recycled polyester in the construction of this hat. We're excited to have your child be a part of it!UPF50 certified headwear, offering peace of mind for their outdoor fun.Crown : 100% Recycled PolyesterBrim : 100% Cotton Hat Size Guidelines: The adjustable snapback allows you to customize the fit of the hat to your little ones head. Toddler Hats generally fit kids 12 Months - 2 Years Kids Hats generally fit kids 2 Years - 5 Years Youth Hats generally fit kids 5 Years - 10 Years Adult Hats sometimes fit kids as young as 8 Years Head Circumference Measurement Guidelines: Measure your kiddo’s head 1cm (1/2 inch) above their eyebrows. SIZES Toddler (48cm) Kids (52cm) Youth (56cm) Adult (58cm) cm 46 - 49 50 - 53 54 - 57 58 - 61 inch 18 - 19 19,5 - 20,5 21 - 22,5 23 - 24