Features: Design: Stable and non-shaking the size of the bottom bracket of the water bottle cage is increased which can firmly fix the water bottle or it can be stuck in the neck of the bottled beverage which is suitable for most beverage bottles. Material: High-strength PC material high hardness light weight wear-resistant corrosion-resistant one-piece molding is durable reusable. Lightweight: lightweight design no burden a water bottle cage is only about 30g install it on the top of the bicycle without the slightest sense of weight gain zero burden. Wide compatibility: This water bottle cage is designed to have wide compatibility ensuring that it can fit most beverage bottles. Securely hold water bottles or other beverage bottles in place ensuring that they don't fall off during casual riding. Nice Service: Please contact us when you have any questions about this product we will try to solve the problem for you as soon as possible. Specifications: Material: PC Size: 15*8cm/15*9cm/16*12cm includes: 1 * Bike Bottle Holder