The Endura MT500 Polartec jacket is a highly versatile thermal mid-layer for mountain biking, featuring high-quality fabrics to protect against winter elements.Features:- The Polartec fleece, soft to the touch and insulating, provides incredible temperature regulation- Elastic panels add protection against wind and splashes in critical areas- Dropped rear hem for a perfect fit over the bike- Close-fitting, helmet-compatible hood provides essential insulation for the head- Large zippered pockets on chest and hands- External zippered chest pocketTechnologies:PolartecPolartec fabrics are bi-elastic and highly breathable. They keep the skin dry when sweating and provide warmth without weight. These fabrics have a patented construction with two unique surfaces: a durable outer layer in wind-resistant and abrasion-resistant nylon, and a soft inner layer in polyester that wicks moisture away from the skin, keeping us dry, warm, and comfortable.