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Introducing the Nalgene Flask. A sip on your hip. For quick refreshment reach for the Nalgene flask. Whether you keep it in your pocket, your purse or your pack, it stays neatly tucked away when not in use. Nalgene ingenuity makes it leakproof; a slender profile makes it bulkproof. Wherever you’re going and whatever you’re drinking, take along a Nalgene flask. Its Hydration at its hippest. * Contains 12 ounces (350 ml) * Features one-ounce cap * Fits easily into bags and packs * Provides long-term storage solutions * Includes durable insulation sleeve * Prevents plastic taste and odor