Marmot Boys Windridge Long-Sleeve Shirt gives your child a shirt that's made for journeys, both short and long. Made from 100% polyester, it is moisture-wicking, quick-drying and odor-resistant, making it a high-performance piece that's perfect for the outdoor-loving kid. Each shirt features a bright, bold Marmot mountain ridge graphic, which is both stylish and reflects a love for open-air exploits. Wear alone or layer under a hoodie or coat as the weather dictates. With an UPF of 50, it also blocks harmful UV light for daytime excursions.