Save some space by transforming your Rambler Bottles with our heat-locking, two-in-one companion the Cup Cap. Not only is it compatible with every Rambler Bottle, but it also offers twice the functionality. As an insulated cap, it helps keep your coffee, tea, or even whiskey at the perfect temperature. And when you twist it off, you ve got a double-wall vacuum insulated cup.Specifications and Features: DETACHABLE CUP: 5 ounce cup that is always within reach of your Rambler Bottle 18/8 STAINLESS STEEL: Puncture- and rust-resistant from top to bottom thanks to its kitchen-grade stainless steel construction NO SWEAT DESIGN: Keeps your hands dry and unaffected, no matter how hot or cold the beverage inside the bottle (or cup) DISHWASHER SAFE: And it also features our No Sweat Design making condensation an inconvenience of the past VERSATILE: The Cup Cap fits every member of the Rambler Bottle family