These 10 polyhedron dice consist of the following pairs:
1 pair of tetrahedron (red);
1 pair of octahedron (green);
1 pair of decahedron (blue);
1 pair of dodecahedron (black);
1 pair of icosahedron (white);
However, if wanting to demonstrate the Platonic Solids, then note that it containts 4 'Platonic Solids' but is missing the 5th (the cube: aka, hexahedron), which is replaced by the decadhedron.
They appear to be good quality and are clearly marked with white numbers on all pairs except the white icosahedron dice, which are numbered in black.
Not for very young children, since risk of swallowing given their size.