When you're on a multi-night expedition through the backcountry, everything you bring does double duty. Save some more space by transforming your Rambler Bottles with the YETI® Rambler Bottle Cup Cap Accessory. Not only does it boast compatibility with the entire Rambler line—it also offers twice the functionality. FatLid™ Insulation keeps your coffee, tea, or even hard drinks at the perfect temperature, while the detachable cup twists off to turn your double-wall vacuum insulated bottle into a hot beverage dispenser, and the cup into, well, a cup. The Yeti Rambler Bottle Cup Cap Accessory makes the perfect YETI accessory for a mid-adventure pit stop. Manufacturer model #: 21070100006.