Classic Translucent Pacifiers feature orthodontic, collapsible and symmetrical nipples respect the natural development of baby's palate, teeth and gums. Design for maximum comfort they also have a stylish design and crystal clear look. Each pacifier comes with a snap-on hygienic cap. All Philips Avent pacifiers are made of silicone and are taste- and odor-free. The silicone is smooth, transparent, easy to clean and doesn't get sticky.