These are two items that can be used with your Medela Breastpump to better meet your breast milk collection and storage needs. The Freemie Collection Cups Deluxe Set includes two 8-oz concealable collection cups (16-oz capacity total) and two sets of breast funnels (25 mm and 28 mm). Many moms want to have extra breast milk bottles on hand to meet their growing and changing breast milk supply. They are compatible with select Medela breast pumps making it easy to pump, store and feed into the same container. Medela's breast milk collection and storage bottle set is a perfect complement to your breastfeeding experience. Authentic Medela spare parts are engineered, tested and approved to work specifically with your Medela breast pump. Made without BPA safe for mom and baby. All Medela breast milk bottles and products that come in contact with breast milk are and always have been made without BPA.