SIC Tumbler! These SIC cups are small biz owned and we are so happy to support them! From the makers: The SIC 20 Oz. Tumbler is the perfect size to go with you wherever life's next adventure takes you! This cup was designed specifically to fit in all of your cup holders. Our triple insulated technology guarantees maximum temperature retention and our splash proof slide lid ensures your drink stays where it belongs. We only use the finest 18/8 kitchen grade stainless steel and premium powder coat materials along with Tritan plastic lids.