[Universal Bike Bottle Cage with Mesh Pockets]. The bottom diameter of the water bottle holder is about 8.3cm and the height is about 17.5cm. It can hold different sizes of water bottles,thermos bottles,beverage bottles,sports bottles,coffee cups,baby bottles,etc. The mesh pocket on the side of the mountain bike water bottle holder allows you to insert your cell phone,sunglasses,charging cable,keys,headphones,gloves and wallet. /p Durable Waterproof Material and InsulationThe bottle cage is made of high quality polyester and non-slip leather,durable and lightweight,will not wear out. Waterproof and weatherproof to protect your gear from dust,dirt and mud. Our bike water bottle cage has an insulating layer to keep your drinks warm in hot and cold weather. No Screws; Quick Setup; AccessEasy to install,this bike water bottle cage has no screws,it comes with 2 adjustable velcro straps and 1 elastic cord,it has a fixed 3-point design that holds the bike water bottle cage securely to the bike handlebars,seat,downtube and fork. You can quickly and easily access your bike water bottle when you need it and stay hydrated on your ride. [Drawstring design; Safe and Sturdy The drawstring keeps the water bottle in place and prevents it from jumping out in the event of a crash,so you don't have to worry about it falling out while riding. The smooth edge design of the water bottle bag will not hurt your hands or easily scratch the water bottle,which makes riding safer. Easy to carry,widely used The water bottle cage also has a detachable shoulder strap,which can be used as a shoulder bag,easy to carry. Our bike water bottle cage is compatible with most sizes of bike water bottles and can be used for folding bikes,mountain bikes,racing bikes,e-bikes,mountain bikes,scooters,children's bikes,women's bikes,baby bikes,wheelchairs,etc.