Comfort Properfit Soft Silicone Cushion Provides A Secure Seal And Comfortable Fit For More Efficient Pumping. Two Phase Technology Stimulation And Expression Modes. Stimulation Mode Gently Stimulates The Breast To Initiate Milk Flow And Expression Mode To Maximize Milk Flow. Adjustable Suction Pressure - 6 Adjustable Levels Of Suction Pressure. Portable And Compact - For Easy Pumping Anytime, Anywhere. Fewer Parts, Which Makes It Easy To Assemble, Use And Clean. Hygienic Design To Prevent Milk From Flowing Back To The Funnel. Bottle Stand Secures Bottle To Prevent Spills. • For Mothers Who Are Frequently On The Go. • Light Weight And Portable. • Perfect Sealing Soft Sillicone Air Cushion Air Cushion. • Two Phase Technology Stimulation And Expression Modes. • Ergonomic Easy-Express Handle. • Simple And Easy, No Backflow Feature.