Offering UPF 40+ protection and moisture-wicking FLASHDRY(TM) fabric, the Boys&'; & Girls&'; Sunriser Long-Sleeve Tee is the perfect layer for their next hike or active outdoor pursuit. We&';ve updated our youth sizing. Please use our sizing guide to find your best fit. Slim fit Circular Design: thoughtfully designed to be disassembled and recycled by us at the end of its life into raw materials for a second generation of products LIGHTRANGE(TM) is a fabric-level finish that combines three benefits: UPF protection, anti-odor technology and moisture management FLASHDRY(TM) materials offer enhanced moisture management to help keep them comfortable Ultraviolet Protection Factor (UPF) 40+ Body fabric made with 89% recycled polyester Raglan sleeves Thumbholes at cuffs Side slits at hem for mobility Drop-tail hem Reflective bar on back hem Heat transfer logo on left chest and back-right shoulder