The Elvie Double Wearable Breast Pump offers a fully equipped pumping solution with 21mm and 24mm flanges. It includes two hubs, four bottles (5 oz each), a pair of 24mm and 28mm flanges, four valves, four spouts, four seals, four storage lids, two USB charging cables, and two carry bags. Weighing 2.05 lbs, it supports both single and double pumping modes, features a closed system, and comes with a 2-year warranty.