Before my baby was born and I was shopping and preparing, the only type of bottle brush I'd seen was the bristle type with a small sponge at the tip. Well they were cheap but soon the plastic bristle starts coming off. They just don't last. Then I saw these at a local baby chain store. I wish I bought them but they were 3 times as expensive as my cheap brush. Then I found these on amazon.com. I have been using it for more than a month and I love it. It's gentle on the bottles, and the sponge comes off so I can disinfect it in a microwave oven. Also since the package comes with two sponges it's like buying two brushes. The plastic handle is not flimsy at all. Amazon sells it for almost half price as the local baby chain store, so per sponge it's not any more expensive than those cheap bristle brushes. I highly recommend this.