Now, you're probably thinking, why would anyone ever need a flask this nice? But I've got the answer: Cold, Wet Days! Nothing like a little "spirits" will make a dreary day go by better! And this flask is the container to hold it. Other flasks weigh a ton, they leak, and they just don't have any style! But not this guy! This IS the Backpacker's Flask! Its capacity is 6.7 ounces. And yet it weighs less than an ounce empty! That's right, LESS than an Ounce! (.8 oz) The round design fits perfectly in your hand. Order this guy! You'll be thanking me on the trail!