Alpinestars K-MX 9 KART SUIT Black Orange Fluo 40 The K-MX 9 is a premium quality technical kart suit for entry and intermediate level racers, with an innovative three layer construction and a host of Alpinestars exclusive performance features. Complies with the following homologation standards:  SFI 40.1/1 Premium Construction  3 layer construction designed for maximum performance and comfort comprising of:  An outer shell made of lightweight and durable Twill Oxford Polyester.  An inner liner in the torso area constructed from cotton toweling to promote moisture wicking.  A polyester mesh inner liner on the arms and legs for comfort and weight reduction.  Mesh panels positioned under armpits for greater ventilation. Ergonomic Fit  Semi-floating (3/4) shoulder gusset construction with stretch Cordura providing improved freedom of movement.  Lumbar stretch panel for greater flexibility and a flat profile; essential for proper driving fit and comfort.  Waist belt offers the driver a tailored fit. Comfort Details  Knitted wrist and ankle cuff finishing afford a snug fit.  Shoulder epaulettes.  Adjustable neck collar.  2 flat pockets provide a convenient storage option when out of the kart.  Astar Zipper Puller