Water tumbler is made of gauge 18/8 stainless steel with an extra spray painting, good rust resistance, durable and convenient to use, easy to clean.Use this tumbler to carry the drink of your choice including but not limited to water, juices, ice coffees, hot coffees, smoothies, cocktails and so much more!The double-insulated flute tumbler can be applied as wine cups, champagne cups, or water cup, suitable for parties, picnics, boats, beach, pool, camping and hiking, etc.