Any recommendation for teething toys for a 4mo baby?TIA!

https://www.facebook.com/rainbowgardenx/ Try this, it's very good while i babywear my son, my son will bite this. If not i get those pacifier clip type, and clip on his shirt and let him bite himself. When we are out for lunch or dinner, he can bite this while i had a quick lunch or dinner before he fuss, at least i dun need carry him to eat.