1、Using premium PVC and polyester materials, soft, no fading, not easy to deform, not easy to wrinkle. 2、210D black encryption lining, wear-resistant and tear-resistant, with fine durability. 3、The exterior has an oversized pocket, a large capacity of 30L and provides a lot of space for your items. 4、With a zipper for added capacity and tightness, the zipper closes smoothly. 5、Double-sided reflective strips design, high light reflection, riding at night is safer. 6、Simple installation, with reinforced and thickened hook and 360° bottom bracket, robust and reliable, easy to install. 7、The horizontal spacing of fixed buckles on both sides can be adjusted according to your needs. 8、Multi-purpose design, there is a portable handle design in the bag, easy to carry. 9、There is a portable design at the end of the bag, easy to travel, easy to carry, you can take it with you when parking. 10、Complimentary rain cover, the fabric is splash-resistant and scratch-resistant, easy to wash.​ This bike backpack uses premium PVC and polyester materials, soft, no fading, not easy to deform, not easy to wrinkle. 210D black encryption lining, wear-resistant and tear-resistant, with fine durability. The exterior has an oversized pocket, a large capacity of 30L and provides a lot of space for your items. Double-sided reflective strips design, high light reflection, riding at night is safer. Features: ​Using premium PVC and polyester materials, soft, no fading, not easy to deform, not easy to wrinkle. 210D black encryption lining, wear-resistant and tear-resistant, with fine durability. The exterior has an oversized pocket, a large capacity of 30L and provides a lot of space for your items. With a zipper for added capacity and tightness, the zipper closes smoothly. Double-sided reflective strips design, high light reflection, riding at night is safer. Simple installation, with reinforced and thickened hook and 360° bottom bracket, robust and reliable, easy to install. The horizontal spacing of fixed buckles on both sides can be adjusted according to your needs. Multi-purpose design, there is a portable handle design in the bag, easy to carry. There is a portable design at the end of the bag, easy to travel, easy to carry, you can take it with you when parking. Complimentary rain cover, the fabric is splash-resistant and scratch-resistant, easy to wash.​ Specifications: Name: Bike Pannier Material: PVC, polyester and 210D black encryption Capacity: 30L Item size: 360 * 160 * 500mm / 14.17 * 6.30 * 19.69in Item weight: 1143g / 2.52lb Package size: 430 * 400 * 40mm / 16.93 * 15.75 * 1.57in Package weight: 1355g / 2.99lb Packing List: 1 * Bike Pannier 1 * Rain Cover 1 * Bike Pannier 1 * Rain Cover