New Reflective Rear Bike Rack Bag. This came with an electric bike conversion kit but wasn't used. It was supposed to be for a battery bank but I made my battery box out of wood. This bag could have many uses. it has 6 each 3"-4" velcro straps on bag that are used to strap it to a bike rack (see pictures). It also had a few 1" round holes on the bag bottom for ventilation or run wires through. There are also holes inside the bag too. There are pictures of the bag dimensions too.