The Mouth Of The Breasts Is Oval-Shaped And Rotates 360 Degrees, So You Can Adjust It To Your Preference. In Addition, It Comes With A Soft Cover For A Gentle Fit: Each Breast Shape And Size Can Be Used For Each Person. What'S More, The Physical Condition Of The Day Will Be Affected Or Change Throughout The Day. Medella Focuses On The "Shape" Of The Pump, Making It Easy For Any Mother To Use Without Stress. Finally, We Came To The "Oval" Pump. Since The Pump Can Be Rotated 360° Freely, The New Elliptical Pumping Mouth (Personal Fit Flex Pump) Will Fit Perfectly In The Condition Of Each Person (2-Phase Pumping Technology For A Natural And Gentle Pumping) When Your Baby Directly Breastfeeding, You Can Suck The Breasts With A Quick Rhythm Of The First Time To Stimulate The Breasts. When The Breast Milk Comes Out, It Changes To A Slow Rhythm To Take Breast Milk. The Harmony Manual Squeezer Reproduces The Natural Way Your Baby Drink With Short And Long Handles (Easy Grip And Anti-Fatigue Design) Ergonomically Designed Handle That Is Easy To Grip And Prevents Fatigue, Rotating, So It Can Be Used With Both Left And Right Hands. The Suction Pressure Can Be Adjusted From The Top And Bottom Of The Handle, So You Can Adjust It According To Your Breasts 【Simple Design And Easy To Clean】In Addition To Washing By Hand And Dishwasher. In Addition To Boiling Disinfection, It Can Also Be Steam Disinfected In The Microwave. (Follow Your Manufacturer'S Instructions ) Convenient To Carry: Lightweight At 3.7 Oz (105 G), Making It Convenient To Carry When You Go Out