Works With Most Wide, Narrow, Angled, Even Disposable Bottles, Includes Pacifier Sanitizer Two 5Oz. Bottles With Slow Flow Nipple; Two 9Oz. Bottles With Medium Flow Nipple, Starter Set Includes Full-Size Bottle & Nipple Brush Auto Shut-Off For Added Safety 2-In 1 Silicone Nipple Works Like Your Breast, Letting Your Baby Instinctively Control The Flow