An abrasion-resistant mid-layer designed for breathable next-to-skin insulation.  • Polartec® Power Grid™ offers channeled insulation that provides enhanced lightweight, moisture wicking insulation  • Abrasion-resistant, wind blocking fabric helps keep you warm while descending  • Form- fitting hood fits underneath your helmet  • Zippered stash pocket on the hip keeps your stuff where in place on the roughest rides  • Main Body: Polartec® Power Grid™ 93% Polyester, 7% Spandex Panel: 92% Polyester, 8% Spandex  • HPS 31"