Scientifically proven to keep gas away from baby’s tummy, with vented wand to reduce feeding discomfort†. Less gas, less stress, more sleep. Patented vented wand, to draw air away from baby’s tummy Silicone nipple that flexes and stretches like a breast Speedy self-sterilizing, in just three minutes in the microwave* 100% leakproof with the lid (even when it’s turned upside down) It’s also BPA free †In testing vs. 10 leading bottles *Based on placing one bottle in microwaves from 700-1000w