Beautifully crafted of beech and plywood, this 26 piece wooden construction set comes with design booklet for building 11 different animals. No tools needed so hands get a great workout as the blocks, panels nuts and bolts are screwed, tightened and then reworked to create the next figure or shapes or maybe a robot! All pieces fit easily back in the 6x6 box. It's a perfect fit in therapy bags and crowded classrooms. Classic construction toy you will use again and again.