I absolutely LOVE this bottle for my little one. I love the fact of it being made of glass as I am assured that it's completely safe for her to use while she is drinking milk. I really am fascinated with the shape of the nipple and how much similar it is to a mother's nipple. The milk flowing through it is at a great pace, it's just right.The design of the bottle as well is a plus, it's very appealing and overall is a pleasant bottle to use for little ones development. I 100% would recommend this to everyone!