The first time we introduced it, my daughter wasn't sure what to think of it! But now, it's one of our favorites! She's 4 months old and not quite ready to cut teeth, but everything gets chewed on and goes straight to the mouth! The Teething Egg let's us feel better about those questions we all have like "Is that safe?", "Will it hurt her gums?", etc. We know we have a good product!