The Medela Hands-free Collection Cups are a breast pump accessory designed to maximize milk expression and provide a comfortable fit. They are ultra-lightweight and compatible with several Medela breast pumps, including the Freestyle Flex, Pump in Style with MaxFlow, and Swing Maxi. The cups are made without BPA, natural rubber latex, and phthalates, making them safe for both mom and baby. The cups are designed with three pieces for quick and easy cleaning and assembly, and hold five ounces (125 mL) per cup. Customers have reported positive experiences with the cups, including convenience and ease of use. However, some customers have mentioned discomfort while using the cups.