Come and see our amazing products. 20 oz ounces stainless steel thin tumbler, with vacuum insulation technology and BPA-free sliding lid. This slim tumbler cup has a powder coating to provide a firmer grip when holding beverages. The double-layer insulation design keeps your beverage hot for 12 hours and cold for 6 hours. Keep cool outside. The accompanying cup is made of food-grade 304 stainless steel. Pls confirm further with us if any query about packing info, inventory status and time schedule.