The Simms Thermal Quarter Zip Top is their warmest midlayer top for cold days and can be worn on its own or underneath a jacket for extra warmth. 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