Nalgene 350ml12oz flask with blue cap blue description 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 specifications 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