Dr. Brown's Options+ Baby Bottles are designed to provide a comfortable feeding experience for your baby. These 4-ounce bottles feature a unique anti-colic internal vent system that helps reduce colic, spit-up, burping, and gas. The silicone nipples offer a consistent flow rate, allowing babies to feed at their own pace, closely mimicking breastfeeding. The breast-like nipple shape encourages a proper latch, making the transition between breast and bottle smoother. These bottles are also dishwasher safe and made from BPA-free materials, ensuring safety and convenience for parents. The design is sustainable and recyclable, growing with your baby as their feeding needs change.