Feed your baby with a natural feel thanks to this Philips Avent Natural Baby Bottle, designed with a unique opening and tip which only releases milk when baby actively drinks. Click on the BABY PRODUCTS & CLOTHES GUIDE to find everything you need to keep your baby healthy and happy! - https://www.kohls.com/feature/baby-products-guide.jsp. FEATURES: Baby controls the pace, just like breastfeeding., When pausing to swallow and breathe no milk flows, just like at the breast, No-drip nipple design helps prevent lost milk from the tip, giving you peace of mind, Anti-colic valve is designed to reduce colic and discomfort by sending air away from your baby's tummy, Flow 2. WHAT'S INCLUDED: 4 Pink 4-oz. Natural bottles with Flow 2 Natural Response nipples; 3 Blue 4-oz. Natural bottles with Flow 2 Natural Response nipples. DETAILS: Ages birth & up, 80% plastic, 20% silicone, Wipe clean, Model no. SCY900/23, SCY900/13, Imported. Size: One Size. Gender: unisex. Age Group: kids. Material: NONE.