The components are very sturdy. I think the problem with young children would be more one of losing the components than one of damaging them. The game play degrades fast with missing components. Also, components are small, especially the metal balls that attach to thé pawn, and if there are children 3 or younger around, this should be closely watched.
Agreed on all counts. My daughter Louisa age 6 loves the game but we have already managed (in just a few weeks) to lose the circular "feather" token. They are very small!