RCS Certified Double Wall Copper Vacuum Insulated Mug, made from 91% post-consumer recycled stainless steel that keeps drinks cold for at least 24 hours or hot for 9. Features a Tritan straw; the lid slides to prevent spills. The 100% recycled plastic press-fit twist-lock lid holds the straw securely in place and easily rotates to reveal the opening. Durable powder-coated exterior. Capacity: 1200ml. Hand wash only.