2 years & up. "Stop Tears Fast" with Boo-Boo Buddy Pets. These adorable gel packs are ideal for quick relief of bumps, bruises, scrapes, fevers, headaches, insect bites, and inoculations. Patented gel formula stays cold for up to 30 minutes and remains flexible even when frozen. Submerge in hot tap water (not boiling) and gel packs can be used warm too! These hypoallergenic, nontoxic packs meet Federal Safety Testing Standards. Wash in soap and water when necessary. Caution: Boo-Boo Buddy Pets are for external use only. Do not mircrowave.