A single bike can be used to trasport up to 5 gallons of water, but it is not any kind of bike that can be used for that purpose, these ones are made with front and rear supports, and have a parking system near the front tire. This bicycles are left outside the store while the process of unload/upload the goods is happening. Strings are used to attach the gallons on the front and rear support. They also have a cloth coiled and embedded on the rear support.