YETI. RAMBLER 30OZ TUMBLER HANDLE. BLACK. YETI wants to give you a hand or at least a Handle when it comes to securely hauling your Rambler Tumbler. The Rambler Tumbler Handles offer an alternative way to hold your 30 oz. Tumblers to optimize portability. The Handle s rubber grip provides an easy fit for your Rambler and its polypropylene construction means your Handle will handle bumps and thumps just fine. Because it s not just a cup handle -- it s a YETI.