Easy to store, hide in your suit, jeans pocket, coat, travel bag. The screw-cap seals tightly, the flasks are air pressure tested to avoid leaks. This Mini flask with Keychian is made of quality stainless steel. This stainless steel flask can hold 1 oz.liquor, whether it's whiskey, vodka, rum, scotch, gin, tequila. It is light even when filled. This flask, funnel set is a perfect gift for friends, husband, wife, boyfriend, girlfriend, father, brother, best man, bridesmaids, groomsman!