Size -- The size of one bag is 28cm*14cm*30cm, the total length of the bag is 41cm. Product weight is 802g. Materials -- The two side bags are made of 300D thick polyester fabric, which is wear and tear resistant. It also features a rubber bone wrap for a stronger and more upright bag. Special Design -- The bag is equipped with 6 straps and a buckle at the bottom of the bag to fix it firmly on the back seat and prevent it from slipping; safety warning reflective strips are on both sides of the bag to give more safety for night riding. Large capacity -- Portable storage pockets on both sides, large space and large capacity, clear storage and layered portability. Bring as much gear as you like to meet the needs of high capacity long distance. Special Gift -- It comes with rain cover, waterproof fabric, light weight and thick reinforced envelopes for extra easy to use.