The puzzle pieces are only as strong as the Ravensburger 15er frame pieces - just wooden. But hold amazingly well - my little one (20 months) usually is not very squeamish chipped a little at the bottom in order (when disassembling) and it is only a part. Items returned the first disassembly pretty hard to separate, but no Splintbildung. The motif surface is shiny.
Not so good, I like that the punch is sometimes very similar, and you therefore can plug together parts that do not actually belong together (1 star deduction).
Beautiful puzzles with child-friendly designs in the outer carton (folding with magnetic closure). Nice to give away and small enough to take home (eg eating out). ; O)