A thermal jersey is a key component to winter riding, and the Prime Power Grid™ Jersey is no exception. With Polartec® Power Grid™ fabric, it's not only extremely warm, but also lightweight, stretchy, and downright comfy. Features: 4-way stretch fabrication allows for easy layering on a cold day. 3 back pockets provide ample storage for your cold weather riding gear. Fabric Content: 91% Polyester, 9% Spandex Knit. Lightweight garment keeps you extremely warm while preventing excess weight and bulkiness on your body. 4-way stretch fabrication has allowed us to create a Slim Fit jersey for winter riding. 3 back pockets provide ample storage for your cold weather riding gear. Fabric Content: 91% Polyester, 9% Spandex Knit.