Nuby Natural Touch SoftFlex soothers are beautiful, elegant and designed to function naturally. They have a shield shaped heart that it flexes, stretches and moves like the nipple of the breast. This bending motion helps stimulate the natural suction action. SoftFlex soothers also feature knobby teeth around the base of the shield that massage and relieve sensitive gums. All SoftFlex lollipops come in a reusable box to store them and keep them clean.