The Bonoch Wearable Breast Pump takes the hassle out of pumping with its many features and innovative design. It accommodates a range of sizes, with 26-millimeter flanges and four additional flange inserts of 19-22-millimeter sizes. The package includes a measuring card to help mothers find their ideal fit for the most comfortable experience. This breast pump features dust covers and the battery holds up to 120 minutes of usage per full charge, making it great for busy mothers on the go. Plus, with a 30-minute automatic shutdown function and an intuitive LCD, managing your pumping schedule has never been easier.