The Melbourne mug features a durable double walled construction to keep beverages hot or cold in any environment. The inner wall of the mug is composed of recycled plastic and the outer wall is made of RCS certified recycled stainless steel. The mug has a 1200 ml capacity that will keep you hydrated throughout the day in style. Features a splash-proof press-on lid with two openings and a swivel closure. Comes with a food grade recycled straw. Hand wash only.