Tornado Mug is a hassle-free blending at your fingertips. With its tornado-like action, the tornado mug completely blends any powder instantly with no clumps and electrical outlets. The cup is 3 AAA battery operated (not included), holds up to 16 oz, and made of BPA free materials. The mug is of food-grade polypropylene, resin, and durable stainless steel base. The snap-close closure mug is approximately 7.25" in height and 4" diameter. It comes packaged in a box.