Hands-free performance for moms who multitask:-Hands-free manifolds that allow moms to multi-task while pumping.-Compatible with Medela breast pumps to allow mums to multitask.-Anatomical design to fit most breast shapes, angled breast shield to provide the greatest comfort on the breast.-Waterproof! Transparent, easy-to-see milk flow, with 150ml/5oz capacity-Easy to clean and assemble with fewer parts.-Compatible with Medela Freestyle Flex™, Pumpin Style® and Swing Maxi™ breast pumps (sold separately)- 21 and 24 mm breast shields included-The Hands-Free Collector is compatible with the Swing Maxi breast pump, Pump in Style Max flow, and the Freestyle Flex breast pump. It is not compatible with the Swing Maxi Simple