· ADAPTABLE DESIGN: 105-degree opening angle is designed to reduce pressure on the breast to optimize comfort and milk flow· MORE COMFORT: The soft rim lays smoothly on the breast for a comfortable, natural feeling· PERSONALIZED FIT: Oval shape can be rotated 360-degrees for comfortable, flexible positioning· SAFE FOR MOM AND BABY: Made of food-grade plastic; made without BPA, natural rubber latex, and phthalates· COMPATIBILITY: Compatible with all Medela Breast Pumps for pumping directly into the storage bottle