Cooler Flask 20oz Ice Pack Flask by Smuggle Mug (1) Two 20oz Cooler Flask Lets You Take In Your Own Drink! Holds 50% more that other ice box flasks. Saves you over $200 each time you use it. New an improved lid guarantees no leaks. Looks like an Ice pack you put in your cooler to get it into concerts, games, festivals etc. Great for you or as a gift. Buy one 2 pack hidden flask set for you and another for your friend. No marking what so ever to give away its true identity. Opaque plastic hides your dark alcohol.