Made of glass, it does not absorb odors, flavors or colors of food, transparency, naturalness and resistance to sudden changes in temperature. Its large diameter makes it easier for parents to prepare and clean the socket, as well as enhancing its stability, while its ergonomic shape allows greater support more comfortable and secure. With round nipple with anticolic valves, which allows you to adapt to the baby's suction rhythm during the feeding, just turning the bottle. Nipple made of medical silicone, highly resistant and non-deformable material that does not alter its color or smell. It is endorsed by the Spanish Society of Pediatric Dentistry.