Marmot Kids Size ChartKeep him drier longer in the protective Marmot® Kids Windridge Long Sleeve features a built-in UPF 50 sun protective finish. Lightweight weave constructed with moisture-wicking and quick-drying technology to ensure long-lasting comfort.Slip-on design boasts a crew neck, long sleeves, tagless design, and a straight hem. 100% polyester.Machine wash, tumble dry.Imported.Measurements: Length: 22 inProduct measurements were taken using size LG (10/12 Big Kids). Please note that measurements may vary by size.