EASY TRANSITION WITH THYSEED: Plastic's golden standard PPSU material, more expensive, more safe. Hygienic and safe nipple is made of 20 degree silicone, soft and squeezy as mom, BPA, PVC and phthalate free. The breast-like nipple shape encourages a proper latch for a more natural bottle feeding experience and eases the transition from breast to bottle and back again.
