I love these bottles! The wide neck means pouring and cleaning is easy. The bottle is silicone so you can squeeze the bottle if you need to control flow or get a few drops out to let the baby taste what's in there. The part I love the most is the flow with the nipples, slow flow is one hole, medium is two and fast is three holes. Instead of making one hole bigger and causing milk to pour out if tipped like the yellow branded bottles that come with major pump brand, they add more holes and there are no leaks! Venting is great. Only complaint is the price and my husband didn't like the smaller base when trying to set it down on an uneven surface. Bottle tipped but didn't leak.