Reusable Stainless Steel Insulated Drinks Bottle 500ml - Peony Pick of the Bunch Material: Stainless Steel, Polypropylene and Silicone Food Safe: Yes Dishwasher Safe: No Reusable: Yes BPA Free: Yes Volume: 500ml Product Information: Insulated double walled design suitable for hot and cold drinks. Thermal design keeps liquids cold for up to 24 hours or warm for up to 12 hours.