1. Material: PVC plastic shell 2. Hardness: 70 pounds 3. Purpose and function: It is used for professional motorcyclists training and competition, when passing extreme speed curves, through this sliding block landing point on the knee, to find the riding transition point 4. How to use: paste directly on the rough side of the knee of the racing pants, the position can be adjusted according to your own adaptation point 5. Features: wear-resistant and durable, good protection, low friction, strong versatility 6. Size: free size, about 16.5x12 cm 7. Weight: about 350g/pair
