A stainless steel cup built to fit a rounded 1-quart Nalgene bottle and eliminate the need to pack along a traditional glass. Lightweight with a foldable handle, our Marine Cup is perfect for those on the go. The GSI Outdoors Glacier Stainless cup is built to last for years, measures 4.2 x 3.5 in., is made of 18/8 stainless steel, and holds 18 fl. oz. of liquid, overall it weighs only 4.9 oz.