evo.com | Stio Sweatshirts > The Stio Trax Power Grid Crew delivers lightweight warmth and moisture-wicking performance for high-output adventures. With a breathable grid fleece design, it keeps you comfortable whether you're layering up for the backcountry or pushing hard on the trail. Concealed Zipper Pocket for Small Essentials Wicking and Anti-Odor Finish Regular Fit A casually shaped design that's not too tight and not too baggy Center Back Length 28 1/2" (Size M) Polartec(R) Power Grid(TM) Fleece 91% Polyester / 9% Spandex, 119 g/m2 | Stio Trax Power Grid Crew Men's 2025 - Small Gray | Spandex/Polyester