• ✔SIDES OPEN DESIGN: Bike saddle bag is sides open for conveniently getting tools. Durable material make this bag has a hard shape that it would not deformation easily. Sides open design make this bag more plump and useful.
• ✔UPGRADE MOUNTING SYSTEM: ROCKBROS newest mounting system on this bike bag. The mounting system is 180 degree adjustable mounting with quick release structure. The mounting system is convenience to take off and put on bag, no annoyance.
• ✔LARGE STORAGE: Bike bag under seat has total L. One side can get the bag inside, the other side is a little pocket with mesh. You could carry bike repair tool, bike tyre, bike pump, energy glue, car key, ID card, etc.
• ✔DURABLE 3 LAYERS SHELL: ROCKBROS bike bag is made of the most durable shell. The outside layer is PU Polyester, the middle layer is 5mm foam, the inner layer is polyester cloth. Durable material is very suitable for bicycle commuter, travel and daily storage.
• ✔LIFETIME WARRANTY: Any questions during using, please let us know via Amazon email. This cycling storage bag is also a great gift (Thanksgiving ,Christmas or Birthday gift) for your husband, kids or friends.