The REACTIV^™ Lite Grid 1/4 Zip features graphene-infused fabric that quickly retains or expels heat as your body demands — lighter weight, better breathability, and more precise temperature regulation. Grid patterning promotes air circulation, wicks moisture, and improves compressibility. Soft, next-to-skin comfort with built-in odor resistance and an active, layering fit. NEVER SETTLE^™