evo.com | Patagonia Long Underwear Tops > The Patagonia Long-Sleeve Silkweight Top is basically the Swiss Army knife of kids' layering, ready to handle trails, water, or whatever random adventure they dream up without complaint. Built from 84% recycled polyester with 40+ UPF sun protection, it dries fast enough to keep up with their energy levels while the spandex stretch lets them move freely instead of fighting the fabric. UPF 40+ Sun Protection 4.3-oz 84% Recycled Polyester / 16% Spandex Jersey with Wicking Finish Rolled Forward Shoulder Seams Regular Fit Neither slim nor oversized. Crewneck | Kid's Patagonia Long-Sleeve Silkweight Top 2026 - Small Blue | Spandex/Polyester/Silk