The SuperBand X is an updated design that is a tough, lightweight and simple solution to attach virtually anything to your bike Easily holds down small items such as a light jacket, sunglasses, energy bars, pump, tubes, C02 cartridges, water bottle, flashlight, Bluetooth speaker, etc Easily attaches to the top tube, stem or seat post using durable rubber O-rings (2 sizes included) Can be attached to the water bottle bolts or a separate water bottle bracket Use on a bicycle, golf cart, stroller, ATV/UTV