Stage 1: Extra soft silicone massager and gum cleaner for delicate newborn gums Stage 2: Soft gum massager for older gums and newly erupted teeth Stage 3: Massages and helps clean gums and teeth during the teething process Stage 4: Soft nylon bristles gently clean baby's new teeth / Colors may vary. You will receive one of the following colors: Pink/Green, Red/Blue, or Aqua/Green. Age - 0 months to 6 years