Without water, human life is not possible, which is why in any situation you need to have a minimum supply of water. Russia, though not a desert country, but water flasks in the Russian Army were always necessary.   

This case is universal, can be used with VDV kettle, flask of the Soviet and US type. This flask pouch included in a "Ratnik" gear.   

The pouch has a main compartment for a flask or kettle, as well as an additional pocket for water purification products or a napkin, can be installed on the MOLLE or UMTBS.