RESEARCH ON BABYS SUCKING BEHAVIOR It is based on research on the 3 natural movements that a baby does while feeding in Japan SOFT AND FLEXIBLE SILICONE NIPPLE For seamless switch between breast and bottle Its super soft and flexible to allow for natural and smooth tongue movement Latchon Line The new design with latching curve of the nipple is guiding for babys appropriate latch so as to achieve effective adsorption EASY TO USE The new bottle shape features with wide neck and streamlined body which is easy to clean and hold SPECIFICATION 81 oz 240 ml bottle comes with M nipple 3 m Nipple size comes from SS to 3L with specific hole size shape thickness and softness different sizes for babies of every age Recommended Age 3 months