[RELIABLE DESIGN] Bicycle cup holder uses three nylon buckle fastening strips fixed to the front of the bike, forming a stable three-point design to ensure that your water bottle remains secure on rough terrain. The bicycle water bottle holder features a drawstring design that can be freely contracted to prevent spills. [DURABLE MATERIALS] The bike water bottle holder is made of tough Oxford cloth material. It is lightweight and durable, with an exterior that resists tearing and waterproofing, while the interior is lined with thickened aluminum film for excellent insulation performance, keeping your mug at a steady temperature during winter. [SUITABILITY CAPACITY] Following the correct installation method, this bike cup holder easily fits 12oz-32oz water cups. A mesh pocket on the side allows you to carry small items such as cell phones, headphones, cards, keys, and small decorations. [WIDE APPLICATIONS] Universal bicycle cup holder measures 3.3 inches wide and 6.5 inches high. 3 adjustable hook and loop straps provide flexible mounting options. Suitable not only for road bikes, mountain bikes, but also for electric scooters, electric bikes, folding bikes, and children's bikes. [INSTALLATION STEPS] The bicycle water bottle cage is very easy to install, secured to the bike handlebars with strapsno screws required. Following our guidelines, it can be installed easily without restrictions. Colour: black Material: Oxford cloth Package Contents: 2 * Water bottle bag Only the above package content is included; other products are not. Note: Lighting conditions and different displays may cause slight color differences between the item in the picture and the actual product. Measurement allows an error of +/- 1-3cm.