Introducing our newest breakthrough — Freestyle is our first hands-free, double-electric pump. It’s the performance you expect from Medela in an innovative pump that fits in the palm of your hand and includes thoughtful features that provide true mobility, freedom and flexibility. Inspired by pumping moms… freedom is born. What is 2-Phase Expression® technology? Through research, Medela learned that there are two distinct phases of how babies breastfeed. The Stimulation Phase is fast and light sucking to start milk flowing followed by the Expression Phase, slow and stronger sucking to deliver more milk faster. The Freestyle breastpump includes exclusive 2-Phase Expression technology that mimics a baby's natural nursing pattern.