Notch Blocks Outdoor Construction Set - 89 piecesNotch Blocks offer children an engaging and sustainable building experience, crafted from FSC certified eucalyptus wood. Each block features smooth, sanded edges and interlocking notches, enabling the construction of large, stable structures with endless design possibilities. This 89 piece set includes a variety of shapes and sizes, such as long and short straight pieces, rooftops, and tunnels, encouraging collaborative play and group participation.