A. Product Features: - Quick release function: An adjustable clamp is installed on the seat post for relatively easy installation and removal. - The package includes installation instructions and necessary tools. - The rack is made of aluminum alloy, which can be used for a long period and is compatible with V - brakes and disc - brake bicycles. - It is equipped with a side protection frame and elastic ropes, which can be used with panniers, backpacks, and baskets. - There is a red rear reflector to enhance visibility during night rides. - It is suitable for various types of bicycles, excluding rear - suspension models, such as mountain bikes, road bikes, commuter bikes, fat - tire bicycles, etc. B. Product Specifications: - Material: Alloy - Color: Black - Seat cushion size: 35.5 x 14 cm/13.8 x 5.5 inches (length x width) - Rack size: 53 x 17 cm/20.7 x 6.6 inches (length x height) - Load capacity: Approximately 50 kilograms - Applicable bike models: Mountain bikes, road bikes, etc. C. Other Features: - Portable and lightweight. - Designed with aluminum alloy and has a quick release function. D. Package Contents: - 1 bicycle rear rack