30 oz. Double wall vacuum insulated tumbler (BC8807) with stainless steel straw (ST20800). 18/8 powder coated stainless steel with copper lining; clear AS pressure lid; 18/8 food grade stainless steel straw with detachable silicone spout for easy cleaning; straw cleaning brush included; fits in standard cup holders. Not microwave safe; hand wash only. Packaged in retail box. Keeps drinks hot for 6 hours or cold for 12 hours! *Straw use is not recommended when drinking hot drinks.