1. Economy and Environmental Protection: This is a traditional manual way, the simplest and most efficient way, with no need of electricity or batteries. (More economical than battery powered frothers and expensive electric milk frother). 2. Froth Milk Easily : Put the milk into the pitcher, place plunger inside and lid it, then please pump the handle up and down 20-30 times(within 30 seconds), until foam has desired consistency. 3. Capacity : 17 oz (500ml), overall size: 73.14 inch / 18 8 cm. Perfect size for frothing milk for 2-3 cups of coffee. 4. Materials : This milk frother is made of 304 stainless steel, which is sturdy and hygienic, and the surface of which is more bright. The inner wall is used stainless steel wire drawing process, so the manual milk frother for coffee are easy to clean and no scratches appear.