Features: During the bending process, the slider produces visible sparks when in contact with the ground, creating a striking visual effect. Provides impact protection and knee stabilization. Suitable for motorcycle riding, cross-country cycling, and other outdoor sports. Attaches directly to the buckle on the knee of racing pants; position can be adjusted for personalized fit. Used in training by professional motorcyclists to identify riding transition points during sharp cornering; the sliding block contacts the ground to create visible sparks. Specifications: Material: Rubber Thickness: Approx. 2.3 cm / 0.91 in Net Weight: 400 g Note: Please allow 1 mm error due to manual measurement. Due to differences between monitor displays, the picture may not reflect the actual color of the item. Package includes: 1 Pair Motorcycle Knee Pads