Demon FlexForce X D30 Top Men's V2 Upper Body Protection Not just for winter anymore! redesigned for use in all seasons (bike and snow) A new lightweight, athletic blend of lycra and mesh Fully ventilated underarm and side New D3O Viper back protection and reinforced rib protection SIZE: XS (32-34), SM (34-36), MED (36-39), LRG (40-43), XL (44-47), XXL (48-50)