evo.com | Outdoor Research Midlayer Fleece > The Outdoor Research Vigor Grid Fleece Half Zip is your go-to for high-output adventures. With UPF 30, ActiveTemp(TM) thermo-regulation, and a breathable grid fleece back, it keeps you cool when you're pushing and warm when you're not. Stretchy, wicking, and ready for action, this fleece keeps up on scrambles, skin tracks, and snack breaks alike. Chafe-Free Design with Dynamic Reach bluesign(R) Approved Materials 12" Center Front Zipper 94% Polyester / 6% Spandex Trim Fit | Outdoor Research Vigor Grid Fleece Half Zip Men's 2026 - 2X-Large Gray | Spandex/Polyester