Enhance your cycling experience with our water bottle cages. Expandable design can carry tail bag, pump, bottle cage and other equipment. Material: Aluminum alloy. Product size: about 13.0x3.9x8.0cm/5.12x1.54x3.15 inches. Applicable: Double arch cushion. Net weight: 81g, package including product weight: 124.5g. Cushion: 7mm straight arch cushion. Pack List: Fixing screws*8, Seat bow clips*2, Bands*2. Helpful Design: Never fret about running out of space for accessories such as tail bags, pumps, and bottle cages onto your rides, thanks to the innovative expandable design. Versatile in Use: Effortlessly carry different gear options to enhance your riding experience, making your cycling trips more convenient and comfortable. Sturdy Aluminum Alloy: Engineered from high-quality aluminum alloy, this bottle cage boasts unmatched durability for dependable performance and appearance whether for daily commutes or extensive cycling trip. Convenient to Install: By easily securing the bike bottle cage to the seat bow, you'll feel more at ease during your rides, with stable support that won't loosen over time. Firm Fixing: Crafted to resist wear and tear, this bottle cage provides a reliable hold that keeps your water bottle securely in place, ready for any cycling adventure without any fear of it coming loose.