????【SCRATCH-RESISTANT AND DURABLE】This bike saddle bag is made of 100% polyester, which is not only abrasion-resistant but also waterproof. More importantly, the bag has PP panels on both sides to prevent deformation of the internal components. ????【MORE SAFETY】This bike bag has light straps for improved visibility at night (need to order 2 extra AAA batteries). You can also hang a tail light on the back of the bag (tail light not included). ????【LARGE CAPACITY】1.5L capacity, 25.5127cm, is very suitable for mini pumps, wallets, folding locks, tire repair kits or multi-tools, etc.; In addition, there are several mesh pockets on the side and inside of the bag for storing various items. ????【INSTALLATION METHOD】The quick release clamp not only provides excellent stability, but also ensures that the Salttel bag can be detached and installed in a short time. ????【WATER BOTTLE BAG】Our bike seat bag features a very practical water bottle pocket. The elastic cord can securely hold your water bottle (bottle not included).