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 phone 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