The Adiri™ Natural Nurser™ Ultimate Baby Bottle features the only nipple truly shaped like a mother's breast. A Petal™ vent helps reduce colic. The Fill, Twist and Feed™ system is easy to use so you can quickly prepare a bottle, even with baby under one arm. Made of soft polycarbonate-free and bisphenol-A free materials. 8-ounce capacity bottle is dishwasher safe.