Self-stirring Tumbler Glasses, 2 pk. A beautiful, mid-size glass that feels great in your hand. Perfect design for entertaining, as well as everyday use. Stir sticks not needed. Set of two InStirring tumbler glasses with the unique patented self-stirring design. InStirring glassware is hand-blown which means each piece is unique and may vary in weight and shape to some degree. 12 oz. Dishwasher safe 2 3/4" x 6"