Introducing our Custom 20oz Skinny Tumbler with Bluetooth Speaker - the ultimate combination of style and technology! Get ready to experience high-quality sound and wireless connectivity while enjoying your favorite beverage. Our tumbler is made of stainless steel vacuum insulation for superior temperature retention, keeping your drink cold or hot for hours. With a sleek and modern design, this tumbler also features sound lighting and is BPA-free. The speaker is waterproof, but not recommended to be submerged underwater. Contact us at info@lunaticgraphix.com for custom design inquiries. This tumbler comes with instructions and a USB charger for easy charging. Perfect for any occasion - from picnics to pool parties, this tumbler will be your new favorite accessory!