Yeti Handle for 10 oz. Rambler Lowballs. YETI wants to give you a hand - or at least a handle - when it comes to securelygripping your Rambler Lowball.The Rambler Handles offer an alternative way to hold your 10 oz. Lowball. The over-mold locks your Handle into place, keeping your Rambler snugly fit, and its polypropylene construction means your Handle will withstand bumps and thumps just fine.