1. Material: PU, internal filling 2. Application: double track, universal clamp code 3. Lightweight and high resilience polyurethane foam 4. PU skin to reduce friction and wear 5. Integrate the principles of aerodynamics to reduce wind resistance 6. The high-strength and light-weight curved steel bow with scale provides strong support 7. Three-section hollow groove to reduce the pressure during riding 8. The tail of the cushion is slightly tilted, which provides better support for the spine 9. Dimensions: 25.3x15 cm 10. Weight: 337 grams