Materials: Nylon, EVA foam, Inner Mesh - Nylon, Strap - Polyester/Latex HAYASHI WKF COMPETITION APPROVED BODY PROTECTOR FOR KARATE The official WKF body protector has 3 layers of high shock absorbing Cordura material and is CE safety certified. The Hayashi WKF body protector is extremely thin and can be easily worn under the karete-gi. The leading BodyGuard body protector, designed by QP sport. Ultra-lightweight and designed for a superior, more comfortable fit. Cross body H pattern back straps attach with an industrial elastic and enable a quick easy fit and removal. Available in 5 sizes for best fit. Click above on size chart to view chest circumference and body height dimension recommendations in metric and inches. Product Features:• Durable Nylon exterior• Thin Ultra-Light design with Breathable EVA foam - for comfort• Flexible for better fit / Freedom of movement• 3 layer padding of high shock absorbing Cordura• Flexiroll (high shock absorbing) Mandatory for kumite in all tournaments sanctioned by WKF.