Set of 12 sponges (4 x 3 packs). The design effectively creates two sponges in one – use the soft side of the sponge as a dish-cloth and the coarse side for tougher stains that need more vigorous cleaning. Length: 11cm. Width: 7cm. Materials: Upper part: 50% polyester, 50% nylon. Middle part: Polyurethane plastic. Lower part: 80% viscose/rayon, 20% polypropylene.