Get the best of both worlds with our 20oz Bluetooth Speaker Tumbler. This double wall vacuum-sealed insulated tumbler keeps your drinks at the perfect temperature while the black bluetooth speaker allows you to enjoy music on the go. It also comes with a water-tight slider lid, steel straw, and straw cleaner for added convenience. Plus, the glo-in-the-dark feature makes it a fun and unique option. Customize it at no additional cost.