204436 Features: Polartec Thermal Pro whip cord fabric is a beautifully textured fleece that delivers warmth without weight and bulk, is highly breathable, and dries quickly Wear it under other clothes without bunching, the mock-neck design with an asymmetrical zip won't interfere with other layers Lift your arms at will in the no-lift, gusseted underarms that keep the garment from riding up Keep small valuables secure in the hip pocket Specifications: Weight: 12 ounces Fabric: polyesterSpecifications based on size Medium