Philips Avent Classic Fashion Pacifiers are the orthodontic, collapsible and symmetrical nipples respect the natural development of baby's palate, teeth and gums. Each pacifier comes with a snap on hygienic cap. 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. The nipple is strong, long-lasting and won't become misshapen or discolored over time. Can be sterilized and is dishwasher safe.