Features1The design is reasonable, and it will not interfere with the riding. 2Built in separate mesh bag, convenient for sorting and placing items. 3Double side bag design, stable and balanced. 4Flap design makes it easier to take and place items. 5Elastic fastening rope, stable and safer, can be used to place umbrellas, inflators, etc. 6Made of fine quality material, wear-resistance for long service time. 7Large capacity design, can accommodate more items and easy to carry. 8Easy and convenient to install and disassemble. 9After installation, it is stable and not easy to drop. 10With reflective painting protect your safer riding at night.SpecificationLarge capacity bicycles back seats bag, spacious to hold carryings for medium and short distance Cycle. Features:The design is reasonable, and it will not interfere with the riding. Built in separate mesh bag, convenient for sorting and placing items. Double side bag design, stable and balanced. Flap design makes it easier to take and place items. Elastic fastening rope, stable and safer, can be used to place umbrellas, inflators, etc. Made of fine quality material, wear-resistance for long service time. Large capacity design, can accommodate more items and easy to carry. Easy and convenient to install and disassemble. After installation, it is stable and not easy to drop. With reflective painting protect your safer riding at night. Specifications:Color: black, grey (optional) Main material: PVC+polyester fiber Capacity: 33L One bag size: 390 * 290 * 160mm / 15.3 * 11.4 * 6.3in Install size: 490 * 290 * 390mm / 19.3 * 11.4 * 15.3in Package size: 400 * 370 * 60mm / 15.7 * 14.6 * 2.4in Package weight: 1238g / 2.7lb Packing List:1 * Bicycle Rear Seats Bag (Dual Bag)Package List1 * Bicycle Rear Seats Bag (Dual Bag)