👶 Pump with Confidence: Your Essential Breastfeeding Companion! US FDA registered medical device, ensuring top-notch safety standards. Compatible with various standard-sized bottles for ultimate convenience. Includes everything you need: 2 valves, 4 membranes, and 2 breastshields. Crafted from BPA-free materials for peace of mind. Seamlessly fits Medela Pump in Style Advanced. 19mm breastshield 2 valves 4 membranes The Maymom Breast Pump Kit is a comprehensive replacement set designed for the Medela Pump in Style Advanced. It includes 2 valves, 4 membranes, and 2 two-piece 19mm breastshields, all crafted from BPA-free materials. This US FDA registered medical device ensures safety and compatibility with various standard-sized bottles, making it a must-have for breastfeeding mothers.