Thermoflask 40 oz Double Walled Vacuum Insulated Stainless Steel 2-Pack is a set of two insulated tumblers made of stainless steel. They are spill-proof and come with drink-through lids, suitable for hot or cold beverages. The tumblers can keep drinks cold for 24 hours and hot for 12 hours. They have a capacity of 1.2L and are suitable for teens, boys, and adults. The theme of the product is bottle, food & drink, and sports.