TAODAN Aluminum Alloy Double Kettle Adapter Bracket Water Bottle Expansion Rack Mounted On Seatpost and Saddle for Mountain Bikes and Electric Bikes Black

["The bottle cage is made of high-strength aluminum alloy, designed to withstand rain and gravel vibrations. It will not deform or break even when subjected to strong impacts.","The dual bottle cage can be mounted under the rear seat of your bike. It accommodates two separate bottle cages and is extremely lightweight.","Whether you¡¯re riding in the rain or under the sun, enjoy a sturdy and reliable rack that won¡¯t add unnecessary weight to your bike.","Mount two bottle cages behind the saddle ideal for long-distance rides, bike backpacking, or road cycling.","Compatible with mountain bikes, gravel bikes, and e-bikes"]