Brand new , never opened! Willow Go® Wearable Breast Pump Bestselling pump - optimized for comfort and milk output, hospital-grade, and app-controlled. Ranked as #1 wearable breast pump by Babylist. What’s included: 2 Willow Go pumps 2 flanges (21mm) 2 flanges (24mm) 2 breast milk containers (5 oz.) 2 container backs 2 pump diaphragms 2 duckbill valves 2 USB charging cables Kit includes 21mm & 24mm flanges.