It has only 4 contact points with the child's sensitive skin for maximum protection. Ventilation holes provide air flow and help to remove excess saliva, which is a source of irritation. The teat is made of extremely soft silicone. The upper part of the nipple is profiled up, exactly as the tongue is laid, and allows correct distribution of side pressure on the palate. The ring placed on the narrow end of the teat massages the gums and brings relief during the delicate phase of teething (in teats for children from 4 months of age). The recess enables proper pressure on the palate, helping in its proper development. Fold or small corrugations on the tip of the nipple allow proper positioning of the tongue and pushing it forward with proper strength during sucking and swallowing.