Fabric type Jersey Care instructions Machine Wash Closure type Zipper SIZING: Castelli products have a close-to-the-body fit to maximize aerodynamics and performance. For a less compressive feel, or if your measurements fall between sizes, we recommend that you size up. IDEAL FOR: Long distance endurance riding. The Jersey has a soft synthetic fabric blend offers a clean look while keeping you cool as temperatures rise. FABRIC: Micro-pique fabric construction wicks moisture to ensure superior all-day comfort. VENTILATION: YKK Vislon full-length zipper allows you to dump heat on your uphill climbs. FEATURES: 3 rear open pockets and one zippered rear key pocket to keep your valuables safe and reflective key pocket trim to keep you visible during low light conditions.