This cup made of food-grade 304 stainless steel, it is double-vacuum insulated. This design ensures beverage can stay either hot or cold over time, let you enjoy hot or cold drinks. If you are a coffee addict who can drink more brewed hot coffee a day, the tumbler cup with lid will justify your expectations and does not sweat. If you are an icy beer lover, your hand will never get frostnip. Tumbler is suitable for home, travel, office, lounge, bar, restaurant and many other occasions. It is also a perfect gift for father’s day, mother’s day, birthday and christmas.