Bamboo Building Blocks Double Set 160 PiecesNatural Construction Kit for Early Years Exploration. The Bamboo Building Blocks Double Set 160 Pieces is a generous, eco friendly construction kit designed to inspire creativity, collaboration, and open ended learning in early childhood settings. This expanded set features 160 lightweight and durable bamboo blocks in a variety of shapes, including bridges, floors, roofs, and cylindrical bamboo style columns. With double the pieces of the standard