This is the big gulp Nalgene for when you need to pack some water. The 48 oz  (1.4 L) volume is plenty for a long leg on the trail, and the gradations help you eyeball volumes while cooking at camp. The classic thin profile of this Nalgene makes it easy to stuff into a loaded pack or side pocket—leak-proof design and indestructible. This is the water bottle you want for long warm days in the Gorge.