This bottle keeps your drink fresh for 24 hours when you add a bit of ice. The Flex Straw lid allows you to drink without tilting the bottle. Note: The Flex Straw lid is not intended for hot beverages. - Insulated TempShield double-wall construction - Made of high-quality steelno plastic coatings - Wide Mouth model: large opening makes it easy to clean and add ice - Compatible with Wide Mouth replacement caps - BPA-free Do not place your Hydroflask bottle in the microwave, on the stove, or in the freezer.