Journeys Edge 80-01215 Auto-Mixing Travel Mug with Tornado Action Features include leak proof cap, durable acrylic tumbler, tornado action mixer Simple on/off button, quickly blends without the effort of stirring or shaking, battery operated - 2 aaa batteries, not included Perfect for mixing formula, health drinks, nutrition shakes, dietary supplements, medications, coffee drinks, juice mixes, lemonade, margaritas, long island iced tea, martinis, shots, and so much more holds up to 18-ounce of liquid, measures 3-inch by 3-inch by 7-3/4-inch Includes retail packaging