Let's be clear, we do not under any circumstances want you to shake your martinis. Just don't, ever.
 
Good, now that we've claered that up, we can tell you that this Boston Cocktail Shaker can be used on it's own for STIRRING YOUR MARTINIS, or if you are feeling adventurous and are making something else, say a whisky sour, then you can pair this with the Boston Cocktail Shaker Glass to make the professional "Boston Cocktail Shaker", an essential piece of cocktail equipment for any bartender. 
 
Made from stainless steel, approx. 28oz, dishwasher safe.