Features: -Includes two 21mm breastshields -A personalize breastshields size helps to achieve maximum pumping comfort -Compatible with all Medela breastpumps and connectors -Soft, smooth, natural-feeling rim -Oval shape can be retated 360° for comfortable, flexible positioning -105° angle adapts to the breast -A correctly fitting breastshield prevents the milk ducts from being compressed -BPA-free About the brand Discover the Medela company, that constantly innovates to offer mothers functional, safe and comfortable breastfeeding products so that they can enjoy everyday life with their baby.