Material: The bottle holder is made of high quality silicone, which has strong stretchability and can fit most bicycle and stroller frames. Application Scenarios: Specially designed for strollers and bikes without bottle holder mounting holes. You can place it virtually anywhere on your bike. The bottle holder can be quickly installed on the bicycle frame, handlebars and seat tube. Safe and firm: The bottle holder mounting seat is scientifically designed, the friction surface is large, and the belt has good tensile performance, and it is not easy to fall off even if it encounters strong vibration. Ecological and environmental protection: The mounting base of the bicycle bottle holder is made of non-toxic and harmless ecological materials, allowing you to enjoy a green and healthy life while traveling low carbon. The package contains: one bottle holder bracket, two 3 mm screws.