We’ve covered our share of flasks here, but this one may might take the job of Booze Protector the most seriously. The Macallan Flask ($900) is a joint venture between The Macallan distillery and Oakley (yes, the sunglasses company), and the result is this incredibly rugged specimen. A stealthy blend of steel, carbon fiber, and aerospace-grade aluminum oughta keep those liquids safe, no? A rubberized bottom and a subtle air vent on the side make this flask ready for the most important job any container can have–besides of course, the nacho cheese dispenser.