Nuance Cocktail Shaker
Nuance of Denmark took the classic 3-part "cobbler" shaker and perfected the details. Made of stainless steel with silicone seals prevent leaks and keep the parts from sticking together. As a bonus, the top doubles as a measuring shot.
Add the juicing attachment (sold separately here) and you're ready for pretty much every cocktail out there.
17 oz capacity.