The shape sorter is 15cm long and 13cm in diameter. There are 3 each of 4 coloured shaped pieces - yellow square, blue triangle, green rectangle, red circle. The sorter has a large square hole on the bottom where the pieces can come out but not too easily!. The shaped pieces are coloured using a water based dye stain and the cage graphics are printed on. Shape sorter is sold separately from shape roller chassis.