The VOLST‚Ñ¢22¬† is the master of the mixed drink.¬† Kitchen-grade 18/8 stainless steel and double-wall vacuum insulation ensure your ice stays solid and your drink remains pure. The VOLST‚Ñ¢22 comes equipped with the Bottle Cap Lid, which threads on to transform this tumbler into a leakproof bottle before your eyes. When it‚Äôs time for a drink, screw our signature alcohol vessel, the¬† MADIC‚Ñ¢ 6, to turn your water into liquor at the press of a button.¬† It‚Äôs the world‚Äôs baddest tumbler, and yes, it's cup holder friendly.¬†¬†FEATURES: DOUBLE-WALL VACUUM INSULATION: The VOLST™22 is built to keep your cocktail cold (or coffee hot) until the last sip. BOTTLE CAP LID: Included with your order, the Bottle Cap Lid is threaded and leakproof, to protect from spills even in the toughest conditions. SNAPBACK HINGE: Locks the twist cap in the open position when you’re ready for a drink DRINK PORT: Sized to maximize pour and reduce spills, so the perfect drink always hits your lips INTERNAL FILL LINE: Use this line to mix the perfect cocktail when paring with the MADIC 6. DURABLE FINISH: Designed with fun in mind. Our paint is designed to hold up to a lot, even a night at the bonfire. CUP HOLDER FRIENDLY: Like any good tumbler should be.