Comotomo Baby Bottles feature innovative and sensible design to closely mimic breastfeeding. A truly wide mound nipple is ideal for babies with difficulty transitioning from nursing to bottle (and back!). Your little one will love to hold onto the skin-like silicone bottle that is not only soft and comforting, but also safe and highly heat resistant. We know that you will appreciate our truly wide-neck design (3 inch opening) and minimal parts that makes cleaning totally hassle free! Comotomo bottles are also equipped with dual anti-colic vents that are smartly designed to prevent colic while offering consistent milk flow without any leaks .They are quite possibly the most thoughtful bottles ever made! *8oz bottles come with medium flow nipples (2 hole) suitable for babies that are 3 months and older BPA-free, PVC free and phthalate free Innovative and sensible design mimics natural breastfeeding Wide-neck design for easy cleaning Naturally shaped, soft, silicone nipples and squeezable body Medium flow nipples (2 hole) designed for babies 3 to 6 months old Safe for use in microwave, boiling water, dishwashers and sterilizers Innovative and non-leaking anti-colic vents Made from 100% safe medical grade silicone Includes 2 bottles