The ortlieb water belt is a great way to transport your fluids around in a comfortable and ergonomic fashion the water bag water bag is the ideal alternative to bulky plastic containers or aluminium bottles the extremely robust and light weight water bag can be folded into a small pack and takes up very little space when empty the water bag is available in a 2 l and 4 l version they are suitable as water containers but also as head or seat pillow bed bottle or even as weight for paragliding