Candylight Plaid Stainless Steel Vacuum Flask, Travel Mug (Apricot) Constructed with a double wall and stainless steel inside and out for maximum travel mug performance. The lid is 100% leak-proof and 100% spill-proof. Vacuum-insulated technology keeps beverages hot for 4 hours, and cold for 12 hours. Stainless Steel Mug will hold up to 16 oz. of your favorite beverage and fits most standard car cupholders. Compact design takes minimal space while maximizing capacity