Introducing our 16oz 4-in-1 Crazy Hiking Lady Speaker Tumbler, the ultimate companion for any outdoor adventure or daily commute. This multifunctional tumbler features a slide top lid with a convenient lift up handle, as well as a screw top cooler top and a plastic straw for easy sipping on the go. Crafted from BPA-free, double-walled, vacuum-insulated stainless steel, this tumbler will keep your drinks at the perfect temperature for hours. But that's not all - this tumbler also comes equipped with a built-in Bluetooth speaker, allowing you to enjoy your favorite tunes while on the move. Whether you're hitting the trails or just enjoying a leisurely stroll, the Crazy Hiking Lady Speaker Tumbler is the ideal choice for anyone on the move.