Whether worn by itself or layered under a jacket, the Terramar Thermal Fleece Crew Shirt keeps you cool, dry, and comfortable for the long haul. Midweight, double-layer 100% polyester fabric is soft, breathable, and traps air for better insulation. Body-activated ec2 Qwik-Dri Comfort technology pulls moisture away from the skin to allow for quick evaporation and improved thermoregulation. An antimicrobial treatment inhibits the growth of odor-causing bacteria, so you stay fresher longer. Built-in UPF 25+ sun protection helps shield your skin against harmful UV rays. Imported.