The colors of the stacked books are different for No. 2 and No. 3. The glasses can be removed, but pulling them off may snag the wool on the head and cause it to fuzz. If you remove them, gently spread the wires on both sides of the glasses (the part that goes over the ears) outwards to take them off. Wool felt: This is a very delicate material. Please handle with care. If it becomes fuzzy, do not pull the fibers; instead, cut them with scissors. Thank you.