ASTAR FLUID SPEED DARK GRAY. With its advanced moisture wicking and extremely lightweight and durable main chassis, the Fluid Jersey will not let you down when the track or trails get tough. The Fluid Jersey comes in a range of distinctive and aggressive color combinations and is designed to match the Fluid Pants for a total performance look and feel. Features: Advanced poly-fabric construction is lightweight, moisture-wicking and durable Cut longer in the rear area for greater coverage when riding Sport collar neck construction for superior rider comfort Compatible with Alpinestars MX pants (3762621-9344-M) (3762621-9344-L)