Willow 3.0 Hands Free Double Electric Breast Pump - CaseNew moms no longer need to be tethered to a breast pump plugged into a wall socket: Willow 3. 0 Wearable breast pump fits completely with the brassiere. 360 of leakproof mobility and seven levels of smart suction up to 245 mmHg add to the convenience. Smart sensors detect your letdown and automatically switch the pump to expression phase. Rechargeable battery lasts up to five pumping sessions. Compatible with self sealing breast milk storage bags or