One vessel, two jobs: the asobu Duplex keeps a hot drink steaming and a cold one icy thanks to double-walled stainless steel and vacuum insulation. Use the upper section as a 22oz mug for coffee on the commute, then switch to the base that doubles as a 12oz can cooler for a beer or soda later on. Its slim, stylish build slips into most cup holders and the base also works as a coaster-style stand — an easy everyday upgrade for smoothies, iced tea, or whatever you're sipping on the move.