The Turin 20 oz Vacuum Insulated Bottle with Twist Cap is made of 18/8 stainless steel with powder-coated matte finish and is copper-lined with double-wall insulation. Has a wide-mouth, stainless steel, screw-top lid with loop attachment so lid will never get lost. Keeps beverages hot for up to 12 hours and cold for up to 24 hours. Inner grates with narrowed opening prevent ice, tea bags, or fruit from spilling out so that it is easy to drink chilled water infused with fresh fruit slices or enjoy a bottle full of iced tea. Recommended hand wash only and should not be put in the microwave or freezer. Must be ordered in exact case quantities and may ship from CA location. FDA certified.