Whilst designed for the K9, the Collapible Water Bowl from RE Factor Tactical has many uses apart from keeping man's best friend from being thirsty. You can use to hold water for other purposes, collecting rain water, for washing food, and more... "The Collapsible Water Bowl allows you to conveniently provide water to your K9 in any evironment. When expanded, the durable nylon bowl holds up to 1400ml of water and can easily be collapsed on itself for storage.