The broad breast-shaped nipple encourages a natural latch on like the breast, making it simple for your infant to mix breast and bottle feeding. The nipple has an ultra-soft texture that is meant to resemble the sensation of the breast. Comfort petals and a flexible spiral shape Flexible spiral design paired with our exclusive comfort petals to provide a flexible nipple that allows for a more natural feed without nipple collapse. Airflex vent technology is unique in its anti-colic properties.