This has led to the development of 2 - phase expression technology which mimics the baby's natural sucking rhythm to express more milk in less time. (amazon.co.uk)
This heavy, clunky machine doesn't look like much, but it marked the start of safer, standardized milk expression technology in hospitals around the globe. (pumpables.co)
It is compatible with bottles of all sizes not to mention their 2 - phase expression technology that makes pumping as comfortable as it can be. (babygearspecialist.com)