Castelli's Trasparente Due Wind Long Sleeve Jersey combines the warmth of a jacket with the lightweight, comfortable fit of a jersey. The front is made with WindStopper X Lite Plus to shield you from cold air, while Warmer fabric outfits the back to aid in thermos regulation. Both fabrics are breathable and transfer moisture superbly, so don't worry about overheating. The Trasparente's multi panel design, with an elastic gripper at the waist, guarantees a secure overall fit. The jersey also has three rear pockets and Napoleon zip pocket that will store your essentials, and the reflective accents throughout the jersey will keep you visible in low light conditions.