The Pearly 385ml Stainless Steel Tumbler is designed with double wall vacuum insulation, keeping drinks hot for up to 6 hours and cold for up to 24 hours. Made from recycled stainless steel (304), this tumbler features a powder coating finish and a leakproof screw on lid. It includes a press button on the lid for a 360 degree drinking experience, making it easy to drink from any angle. With a 385ml capacity, it is suitable for both hot and cold beverages. This tumbler is BPA free and not suitable for dishwashers or microwaves.