A sip on your hip for quick refreshment. Nalgene ingenuity makes it leak proof; a slender profile makes it less bulky. Wherever you"re going and whatever you"re drinking, take along a Nalgene flask. Features one-ounce cap, fits easily into bags and packs and includes a durable insulation sleeve. Suitable for long-term beverage storage. Prevents plastic odor and taste. Volume: 12 oz (350 ml).