Starbucks Stainless Steel Lucy Classic Rubber Grip Travel Tumbler Thermos Mug - 12 fl oz Rare and hard-to-find Starbucks tumbler Stainless steel construction; double-walled insulation; flip-top lid Rubber grip band embossed with Starbucks logo Rubber base to prevent slipping on surfaces; hour-glass silhouette for comfortable holding 12 fl oz