Features: Can Be Used As A Single Or Double Breast Pump, Making Expressing Milk Much Quicker Quick, Easy And Efficient Pumping Includes 2 Phases "Let Down" To Initiate And Stimulate Milk Flow And "Expression" To Maximise Milk Flow. In Expression Phase, The Pump Offers Mums A Choice Of 3 Of The Most Effective Pumping Styles, Which Can Be Further Tailored For Comfort Closed System Design Guaranteed Against Milk Entering The Tubing, Which Ensures Hygiene And Makes The Pump Easy To Clean