Even at that age, the kittens know how to keep their real claws pulled in when just playing around. They are fully socialized and not afraid of each other.
All very healthy w/o being overfat. Everyone has a clean, fluffy fur coat. Matt-free.
If you’re going to have kittens, it’s always a good idea to have two or more. They learn from play-fighting with each other that claws and fangs hurt.