This 3-ounce collapsible shot “glass” will hold 1.7 ounces of liquid, allowing you to take a hit of espresso in the morning, a sip of wine with lunch and a shot of Scotch any damn time you like. The stainless steel rings collapse down and fit into a small metal keychain-able case, and should you really want to hide the cup from prying, teetotal partners, it comes with its own faux-leather zip-shut case.