Simms warmest layer for cold days, the 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.

Smooth faced grid-fleece layers perfectly with our baselayers to provide maximum warmth

High collar with a quarter length zipper allows for venting and easy on and off Body - 255gsm 93% polyester, 7% elastane finished with Polygiene antimicrobial moisture management