OGGI's Classic Stainless Steel Mini Cocktail Shaker is the perfect companion for vacations of all kinds. Fits neatly in a suitcase or an RV - just add liquor and mixes and you're all set. This mini also does a great job of turning out a solo single serve cocktail in the comfort of home as well. Constructed of food grade stainless steel, the Classic Mini is a long-lasting investment. Not only does the shaker cap have a built in ice strainer, but also includes an insert to help prevent leakages. If the metal parts become difficult to separate it is likely due to the use of ice which causes shrinkage, the parts can be loosened by running warm water over the body of the shaker. Cheers!