Just shake it, and make foamed milk.
A manual shaker milk frother. Fill the cup to the measurement mark with cold milk. Set up the filter and the upper and lower cups and shake well for about 20-30 seconds. This will make smooth, foamed milk for cappuccinos and lattes. By transferring the foam milk inside a microwave safe container and heating it up, you can enjoy it with hot drinks as well.
Top Opening Diameter 68 mm