This is a British military style water bottle and mug set. The water canteen has a capacity of 1 quart (950ml) and has a screw-top lid with retention loop. The cup can hold 16oz (500ml) and features metal folding handles and secures to the top of the water bottle when not in use, which also protects the screw-top lid. Both are made from a heavy duty plastic. These conform to the British military Issue 58 pattern size.
