Adopt imported Japanese silicone material. Excellent shock absorption effect, durable and not easy to fall off. Reduce the amplitude of impact generated by the ball effectively. Novelty vibrastops are designed not just for excellent shock absorption, but can help you change weaknesses to strengths. Type: Tennis Racket Shock Absorber. Material: silicone. Color: As picture shows. Suitable for: Tennis racket. Package Included: 1 x Tennis Racket Shock Absorber.