18 Oz Stainless Steel Insulated Beverage Tumbler (Cobalt Blue) Double Walled construction insulated beverage flask of 18/8 food grade stainless steel with powder coating for zero condensation and easy grip Slim line design fits most cup holders and can comfortably be held by smaller hands 2.25" Wide mouth opening allows easy access for filling with ice or any beverage, whether hot or cold. Portable hydration all day long BPA free dishwasher safe lid is designed with a snap close spout to prevent spillage or leakage and an easy grip handle to make carrying effortless. 18 OZ capacity keeps drinks hot for a full day at the office or cold for a day out on the trails. Perfect for the on-the-go individual