The YETI Rambler Tumbler Handle is a handle for the mug you already own. It'll work with the 20 ounce or 30 ounce Rambler Tumbler, but you've gotta make sure you get the right one. Once it arrives, slip it onto that mug and get a solid grip on your drink. Mmmm, delicious hot coffee, or maybe it's an ice cold water. If you don't have a Rambler yet, make sure you get one of those before this, because they're definitely sold separately.