The Patagonia Kids’ Long-Sleeved Capilene® Silkweight T-Shirt is a lightweight, quick-drying performance top designed for use on trails, by the water, and in warm to changeable conditions. Made from Capilene® Silkweight 84% recycled polyester and elastane jersey with built-in 40+ UPF sun protection, it provides breathable comfort from cool mornings through to warmer afternoons.