This bicycle bag from WEST BIKING is fully waterproof, expandable, and made of TPU material. It is also foldable and has a capacity of 15-20L. The product has been tested and certified for high-quality and is designed for double-sided usage. Its model number is YP0707313 and it can be customized according to your needs. Please note that it can also be combined freely with other panniers for added convenience.
