Double-wall tumbler with air insulation that keeps drinks hot for up to 2 hours and cold for up to 4 hours. The inner wall is made from PP plastic, while the outer wall is crafted from RCS-certified recycled stainless steel with a modern matte finish. Designed for versatile drinking, it includes a spill-proof press-on lid with separate slide openings for sipping directly or using the reusable food-grade straw. Volume capacity: 540 ml.