The ortlieb water bag is the fantastic lightweight alternative to the bulkier plastic or aluminium bottle this compact ortlieb water bag features straps for fixing to the backpack and is made of tear resistant and watertight fabric the perfect addition to keep you hydrated throughout any ride or journey the ortlieb water bag also features food grade coating on the inside which ensures safe transport of your water the 4 and 10 litre versions can be easily fixed to branches or vehicles thanks