Tool bike bag Put the tail bag on the back seat of the car, which can not only fully reduce the interference to riding, but also conveniently carry items, wallets, mobile phones, etc.: it will definitely be uncomfortable to carry mobile phone change on the body, so when we ride When you are on the road, you can put all the things in the bag in the tail bag of the mountain bike. Portable maintenance tool: During the riding process, some unexpected failures will occur on the mountain bike. No one can avoid this. Wouldn't it be handy to have a set of portable repair tools in your tool bike bag?