E Bike Controller Bag, Lithium Battery Controller Bag Case Kit for Electric Bicycles Mountain Bikes Controller Box 1. The controller bag is available in two sizes for you to choose, the large size is : 240mm*100mm*65mm,the small size is :150mm*70mm*60mm (There is a slight error in manual measurement) 2. The control bag has a certain waterproof effect, but it cannot be used in heavy rain for a long time. Please pay attention when using it 3. Double zipper is involved, which is more convenient for the installation of electric bicycle controller 1. Three magic straps can fix the controller bag to any position of the electric bike at will. 2. Both sides of the controller bag are equipped with night reflective strips, which can act as a safety reminder at night and increase riding safety Internally filled with buffer material to better protect the controller, slow down vibration and protect components The front of the electric bicycle involves a cable hole, which can facilitate the connection between the controller and other electric bicycle accessories The bottom of the controller bag is made of non-slip material, which has a good anti-slip effect and a certain support function.