Some mommies aficionados have labeled the Como Tomo Silicone Baby Bottle as "Breastfeeding in a Bottle".  Como Tomo just likes to think that it's the next best thing to mom! Babies loves drinking from these bottles as they are designed to naturally mimic breastfeeding as much as possible. These bottles are Mommy Inspired and Baby Approved! Comotomo Baby Bottles feature innovative and sensible design to most closely mimic natural breastfeeding. Our naturally shaped, soft, silicone nipples are ideal for babies who have trouble transitioning from nursing to bottle-feeding. Your little one will love to hold onto the skin-like, soft and squeezable body that is like no other bottle in the world. And you will fall in love with our wide-neck design for brushless, stress-free, cleaning bliss! Our bottles are equipped with truly innovative vents that are smartly designed to prevent colic, while completely eliminating annoying leaks. They are quite possibly the most thoughtful bottles ever made. *150ml/5oz bottles come with true slow flow nipples (1 hole) designed for babies 0-3 months." 250ml/8oz bottles come with medium flow nipples (2 hole) designed for babies 3+ months."