Demeras Bike Water Bottle Holder Bag Cycling Frame Waterproof Storage Bag for All Bikes Daily Use Touring Commuting(L)

[Premium Materials]: The outer layer is made of wear-resistant material, so this cup bag can be used for a lifetime. It is also easy to clean in daily use and splash-proof. [Insulation Inner Layer]: Keep warm with the inner layer of aluminium foil, this bag is insulated, so you can keep drinks hot or cold for a long time during your bike ride. [Wide Range of Applications]: It can place milk tea, water cups, kettles, baby bottles, mobile phones, etc. Attaches to the handlebars and stem of your bike, allowing quick and easy access to snacks and water bottles. [Great Cycling Accessories]: appearance design, simple and beautiful. How exciting it is to drink a cold drink after a hearty bike ride! [Easy Installation]: No additional screws. No drill holes required by a typical water bottle holder. Only three steps. 1. Attach two top straps to the horizontal handlebar of your bike. 2. Then attach the lower strap to the vertical shaft to maintain the solid triangular structure. 3. Put in the water cup and tighten the buckle.