Orthodontic symmetrical collapsible nipple so right side up or upside down, philips avent pacifiers help ensure natural development of teeth and gums, Taste and odor-free silicone nipple makes for an easy transition between pacifier, breast and bottle, Includes two pacifiers with extra freeflow air holes for sensitive skin. ideal age range: 0-6 months, WARNING: Do not tie pacifier around child's neck as it presents a strangulation danger, Colors may vary, you will receive one of the following colors: pink or clear/white, green, blue, orange