You can count on this sturdy 20 oz. stainless steel tumbler to keep your hot and cold drinks well insulated for hours. It has a slightly tapered silhouette and features a high lip slider lid with room for a straw. Made of You can count on this sturdy 20 oz. stainless steel tumbler to keep your hot and cold drinks well insulated for hours. It has a slightly tapered silhouette and features a high lip slider lid with room for a straw. Made of high quality stainless steel that doesnt change the taste of your beverage.high quality stainless steel that doesnt change the taste of your beverage.