Make pumping and transferring milk a breeze with Willow Go Pump Reusable Breast Milk Containers. BPA free, dishwasher safe and easy to assemble, our reusable breastmilk containers provide 7 ounces of milk capacity each. Compatible with Willow Go Wearable Breast Pump, you can experience the convenience and mobility of hands-free pumping. Larger 7-ounce size is great for moms who produce more or have high output sessions. We recommend replacing pump parts every 3 months for optimal performance. Normal wear and tear can impact suction and output. You deserve a pump you love. Powerful, comfortable, fully in bra and app-connected, our wearable pumps for breastfeeding are simply built different. So cut the cords, ditch the dupes and join the 300,000 moms who have brought Willow into their lives. Find your perfect Willow breast pump today and unlock the convenience of hands-free pumping.