1. Based on the principles of fluid dynamics, the turbulent surface design inspired by a golf ball effectively reduces wind resistance, resulting in superior aerodynamics during exercise 2. Lightweight design for a comfortable ride 3. Compatible with built-in trackers 4. Snug-fitting design prevents slippage 5. Compatible with any bicycle equipped with mounting holes 6. The built-in locator uses a button battery for long-lasting power and easy installation 7. Material: nylon fiber 8. Size: about 18 x 7cm 9. Weight: about 43g
