Smuggle your favorite drink anywhere. This lightweight, leak-free plastic flask will sneak 10 ounces of liquid past a metal detector, and the aluminum outer cap doubles as a 1 oz shot glass. Disclaimer : Flasks aren't meant for storing alcohol long-term. Leaving liquor in a flask for too long might lead to undesirable flavors. To keep things fresh, finish or replace the contents within a few days. Cheers and happy sipping!