A sleek 20oz steel tumbler that will keep your drinks at the perfect temperature all day long. Enjoy the added bonus of an Optional Bluetooth Speaker - Speaker Color Varies for music on-the-go. Expertly designed for your convenience. Designs are sublimated for long last. All Designs are PRINTED and FLAT although some designs may look textured for effect. These are NOT microwave safe and handwashing is recommended for longest use.