As the warmer months pass, there comes a time when combining arm warmers with your regular short sleeve jersey simply won't cut it anymore. When this happens, consider a warmer top, like the Giordana Fusion Long Sleeve Men's Jersey, to carry you through winter. Whether worn as an inner or outer layer, the Fusion Jersey provides a layering-friendly fit and the technical properties you need to stay warm in late fall and early spring. Giordana builds the Fusion from a synthetic that's both light and soft, but the material's brushed inner face creates a low-loft layer that traps warm air in order to insulate against temperatures reaching into the 40's, depending on personal cold tolerance. Despite its warmth, the jersey has an open structure that makes it breathe well and allows it to swiftly wick sweat away from your skin to avoid the accumulation of clammy moisture. The Fusion Long Sleeve Jersey has a full-length zipper with a gripper pull tab and a tall collar to help ensure that chill doesn't sneak in. Three rear cargo pockets provide ample storage space, and reflective piping boosts visibility in low-light conditions. The newest Fusion is also equipped with a fourth, zippered security pocket. A silicone gripper waistband holds the jersey in place.