Our warmest midlayer for cold days, the M's Thermal 1/4 Zip Top adds warmth on its own, or layer it under your favorite jacket to dial in reliable comfort. A grid-fleece interior traps heat next to-skin without adding bulk or limiting range of motion, and a smooth exterior makes for seamless layering.
FABRIC TECH: Body - 255gsm 93% polyester, 7% elastane finished with antimicrobial + moisture management
Great base layer that I wore on a February '23 snow goose hunt. Comfortable fit & loved the high neck!