1. Froth Milk Easily: add milk into pitcher, place plunger inside and secure the lid, pump the knob up and down, about 40-60seconds, until the bubble and milk blend, then pour out. 2. Economy and Environmental 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). 3. Materials: This milk frother is made of 304 stainless steel, which is sturdy and hygienic, and the 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 and no scratches appear. 4. Artistic and Unique: For those who are traditional craftsmen, use the Manual Foamer, swing up and down evenly, the speed should not be too fast, can produce super delicate milk foam, which is more artistic and unique than the automatic foamer.