Designed with our breathable Tri-Durance fabric, this fully seam-sealed jacket provides comfortable A mesh back panel increases airflow without letting in rain, while articulated sleeves and underarm gussets enhance range of motion. Machine wash cold WATERPROOF, WINDPROOF & BREATHABLE This 3-layer fabric provides excellent protection from downpours and harsh winds. while added stretch allows for range of motion during active pursuits. Fit like small size, armpit to armpit it’s 20 inches