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