Our classic Tumbler fits comfortably in your crafty hands during daily routines. Thermo 3D® double wall vacuum insulation keeps your beverage at the ideal temperature and 18/8 medical grade stainless steel won’t transfer flavor or leave a metallic aftertaste. All parts are BPA free including the press fit lid, designed to retain temperature longer and prevent splashing. Yea, of course it's cup holder compatible. Do we look like amateurs? Enjoy your decadent liquid gold like a f***ing champ!