The Philips Avent Manual Breast Pump features a unique design, so your milk flows directly from your breast into the bottle or container, even when you are sitting up straight. This means you can sit comfortably when pumping: no need for you to lean forward to make sure all your milk ends up in the bottle. It is small and lightweight, which means it is easy to store and transport, making pumping on-the-go more discreet.