Whatever your day holds, this 30 oz. Stainless Steel Tumbler is up for the job. Double walled and vacuum insulated, it features an ergonomic tapered sillouette, slider lid with room for a straw, and a silicone grip. Keeps drinks cold for hours. Made of high quality stainless steel that doesn't change the taste of your beverage. Holds up to 30 oz. Ergonomic tapered sillouette makes for easy holding Double-wall construction will keep your drink hot or cold for hours Hand wash only