The Physiological SX Pro teat maintains the tongue in the same physiological/natural position as when the baby is breastfed.Created taking into account the baby's oral characteristics, whose jaw and jaw are in full development.Follow the most advanced professional recommendations to not interfere in the development of the oral cavity. Physiological form. Plan and symmetry: It is the most recommended form by Pediatric Dentists¹. It leaves the tongue more space in the oral cavity so that suction is as natural as possible². Longer neck² -> 20 mm: Reaches the junction of the hard and soft palate, as recommended by scientific studies³ to achieve a more natural suction. Neck centered in relation to base -> 90°: More comfortable for the baby who takes the bottle alone. Anticolic valve:Allows pressure balance between the outside and the inside of the bottle. Slightly rounded concave base:Place the muscles of the mouth, tongue and jaw in the correct position.