Frequently Asked Questions What makes Philips Avent Natural teats unique? Using Philips Avent teats to feed your baby brings a lot of benefits. Find out what makes Philips teats so unique. Comfort petals The new Avent Natural teat has unique comfort petals, reducing leakage and teat collapse. Twin-valve design Avent Natural teat has an innovative twin-valve design with an open frame for effective functioning. Natural latch The Natural teat endorses natural latch-on and high teat acceptance.