Like another lady, we were using Dr. Brown and I got this one due to its size, for greater convenience. He is 9 months old. With the previous bottles, it took him 5-6 minutes to drink the milk, while with this one, he sucks and sucks and the level doesn't go down. He gets tired and cries. I thought the nipple was wrong, but it's the 6-18.

We use Dr. Brown and I bought this for him to drink milk in the morning and at night! While with his bottle, he finishes in ten minutes... with this Nuk one, it took 20++ minutes until the baby got tired and started crying! It didn't work for us. I will try again later

They are great bottles. Lightweight, durable for drops, and easy to clean. They are slim, so they take up less space. Their storage is easy. I have bought five. Only my daughter drinks from such bottles. She doesn't want the others