A.B Crew 1 Set Stainless Steel Motorcycle Knee Pads and Elbow Pads Protective Motocross Armor Set Adjustable Elastic Strap Material: Steel plate diving cloth + EVA foam + leather + elastic Size: Knee length 17inches/43cm, elbow length 12.6inches/32cm Adjustable elastic straps close for secure fit. High density foam padding for superior quality and comfort. High impact resistant plastic shell.