circle, heart, square & triangle four geometry shape, in & out are different shape for each, 4cm size, make up differ building. 1. circle,heart, square & triangle four different geometry shape, size in 4cm L & W or diameter.2. made out off soft rubber material, which is recycle plastic, more safe for kids too, ASTM F963 & CE standard, Phthalate & Lead free.3. different color will be available.4. ...