The Glen Camp cups are for sipping Scotch or other whiskies in the great outdoors. Their form honors the ideal contours of a tasting glass for optimal nosing of whiskies, and they're designed as a set of stacking, spun metal cups for durability outdoors. They're spun in aluminum, after researching various metals and learning that some distillers in Scotland successfully use aluminum containers with no negative impact on the quality or flavors of the Scotch itself.