No wasted space when packing a cup. This unique design from Olicamp is designed to fit over the end of a round 1Qt. Nalgene, as well as most other round 1Qt. bottles, eliminating the wasted space of packing a traditional cup. Made from high quality stainless steel, the wire handles fold flat to save space and extend enough to use the cup to cook without burning your fingers. Also great as a measuring cup with easy to read graduations on the side of the cup. Capacity: 16 oz.