The Astrid Recycled Stainless Steel Double Wall Bottle - 530 ml features double-wall vacuum insulation providing excellent temperature retention for hot and cold beverages. Made from recycled stainless steel (SS 304). With a capacity of 530 ml the bottle keeps hot drinks up to 24 hours and cold drinks up to 10 hours. The matching colour screw-on lid ensures a leakproof seal making it perfect for everyday use. Not suitable for dishwashers or microwaves.