Upgrade from the classic nesting toy to the extremely resilient and durable pieces of the Discovery Shapes. A perfect companion for building blocks, loose parts play or traditional block play, this natural toy set bridges the gaps between various play patterns. Children can stack, balance, create patterns and learn about shapes while experimenting and exploring using this set. Easy- to-clean and durable enough to be used indoors and outdoors. It is made of Poly+ (30% wood matter / 70% plastic polymers). Largest square measures 15cm tall.