A 24 fl oz stainless steel bottle cup with folding wire bail handles. 4.1 x 4.1 x 4.4 in. Weighs 8 oz.

GSI's own framing: "Is it a cup? Is it a pot?" It is both, and the shape is the clever part — it is designed to fit around a standard 1-litre water bottle, so it takes up no space you were not already using.

It will also store a small fuel canister for your stove, which is the other dead space in every cook kit.

Stainless, so it goes on a flame. The wire handles fold flat for packing and give you something to lift it off the heat with.

Large is 24 fl oz. GSI also make a 20 fl oz small, which is slightly shorter and weighs 4.9 oz rather than 8 oz. The large is the one for cooking rather than just drinking.

Hand wash with warm soapy water and dry thoroughly. Avoid abrasive cleaners.