This is an AMAZING breast pump! So normally when breastfeeding, I wear a nursing pad to catch any milk released during the letdown so my clothes don’t get soaked. Well, with this silicone breast pump, I don’t have to wear a nursing pad. This bad boy catches all of that milk and I can store it for later. I got about 2.5oz of milk that would’ve ended up in a breast pad and in the trash, while Symphani nursed on the other side. No additional parts. Just the silicone pump and cover! This is a Godsend!