Nipple design mimics natural breasts; allows for easy latching and reduces bottle rejection Integrated dual-venting anticolic system limits air ingestion Off-centered nipple allows continuous flow,upride feeding and minimizes leftover residue 100% Non-toxic silicone, BPA,PVC, Phylate free and Dishwasher safe Smooth texture makes it easy to hold and Wide neck for easy cleaning Gentle touch for a colorful beginning! Feeding is the most important job of any parent, and keeping it as natural as possible only makes the process better. Designed to mimic a natural breast, the Olababy Gentle Bottle features a nipple design that allows for easy latching and reduces bottle rejection. Dual-venting is integrated into the design as an anticolic system, and to help with air flow. The off-centered nipple allows for better outflow and reduces leftover residue. The wide neck allows for easy usage and cleaning, while the soft texture provides a comfortable grip for parents. Made with medical-grade silicone, the Gentle Bottle is 100% BPA, PVC, and Phthalate free. Designed with baby in mind, the Gentle Bottle keeps feeding as natural as it should be.