The K-MX 9 Youth Suit is a premium quality kart racing suit designed for young racers in all levels of competition. The K-MX 9’s advanced ergonomics and safety performance help set up-and-coming racers on the road to racing dominance.Complies with the following homologation standards:• SFI 40.1/1Premium Construction• 3 layer construction designed for maximum performance and comfort comprising of:o An iuter shell made of lightweight and durable Twill Oxford Polyester.o An inner liner in the torso area constructed from cotton toweling to promote moisture wicking.o 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.• Shoulder epaulettes.• Adjustable neck collar.• 2 flat pockets provide a convenient storage option when out of the kart.• Alpinestars zipper puller. Alpinestars - KMX-9 Youth Karting Suit Sizing Chart