One of the twin mamas at my office told me to try Dr. Brown's bottles and that they were a godsend to her with one of her twins that was a big spitup'er. I went out that same day and bought a starter pack and they've been awesome! That was the first night Liam ever slept through the night. He didn't keep it up the next night, but the boys have been so much more comfortable and spitup has been greatly reduced around here. I must say I will be recommending these bottles to all pregnant friends.