- 16 FL. oz. (470ml) UNBREAKABLE DOUBLE STAINLESS STEEL WALLED VACUUM FLASK WITH CONVENIENT PUSH BUTTON POUR/LOCK AND A 12 FL. oz.(350ml) INSULATED STAINLESS STEEL MUG. DESIGNED TO FIT CAR CUP HOLDERS. KEEP LIQUIDS HOT OR COLD FOR HOURS. GREAT FOR CAMPING, TRAVELLING, OFFICE, SCHOOL, AND WORK -