When choosing the right baby bottle, we understand a mothers’ concern. We want the safest experience for our little ones and the most peaceful experience for everyone! The aMACEing ZERO LEAK® Baby Bottle uses a patented nipple design to offer a truly leak resistant baby bottle. Milk only comes out when your baby is feeding on the nipple. If your baby stops, the flow stops! This helps reduce the chances of health-related, and potentially life-threatening risks. Our leak resistant nipple also has a uniquely designed anti-colic vent which helps reduce colic and symptoms like burping, gas, and reflux to make sure feeding is always a great experience for both you and your little one. In addition to leak resistance and anti-colic, the nipple also features a variable flow which keeps your baby in control! You don’t need to worry about slow flow, medium flow, or high flow. Our patented nipple design adjusts to your baby’s rhythm allowing milk to flow at his/her pace. This single nipple will work well for your little one whether he/she is just a couple weeks old or 6 months old, just a little less to worry about. Our baby bottles are BPA, lead, and phthalate free to ensure your peace of mind. When handling the Mace baby bottle, our Mace collar makes opening and securing the baby bottle easier while the Mace bottle cap secures the bottle for safe transport. Our baby bottles feature a wide base to help prevent the bottle from easily tipping over. Mace baby bottles come in 7oz and 10 oz sizes and feature both ml and oz measurement marks on the bottle. The bottle is safe to go in the top rack of your dishwasher, just make sure you wash all parts separately. Our baby bottles have passed CA Prop 65, CPSC, FDA, and SGS testing.