From the makers of the popular Dr. Brown's feeding system comes this easy to use formula mixing pitcher. The unique blade mixes formula with no clumping, while minimal air is introduced into the mix. Allows you to prepare up to 4 8oz bottles of formula at one time. Plus, The formula mixing pitcher from Dr. Brown's eases formula preparation by allowing up to 4 bottles to be mixed and stored at one time. Unique features include a mixing blade that quickly dissolves formula with no clumping, and an adjustable stopper that prohibits the mixing blade from lifting above the surface of the liquid as to keep air introduction to a minimum.Disassembles without difficulty for easy cleaning. Dishwasher safe.