CYCLAMi Bicycle Water Bottle Cage Cycling Cup Holder, White, Black, Black+CYC-HB15 Tracker, White+CYC-HB15 Tracker

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