The Macallan single malt Scotch whisky brand partnered with Oakley Inc. to create a rugged flask for on-the-go consumers. The Flask is designed to protect the whisky inside from almost any environmental challenge, the company says. Clad in black anodized five-axis-machined aerospace-grade aluminum, The Flask also features a rubberized bottom, a non-skid grip, and a small rectangular air vent for ventilation, it says. Underneath is an inner flask, which is made of food-grade steel and wrapped in carbon fiber composite that is laser welded and treated to an intensive passivation and electro-polishing procedure to ensure quality protection, it adds. Only 550 limited editions of The Flask with an accompanying bottle of the 22-year-old whisky are available, with a suggested retail price of $1,500.