The basic size is palm-sized, with a thickness of about 8 millimeters. They are coarse sponges. However, this is a set of 10 "as-is" sponges that may be smaller, thinner, thicker, or have irregular shapes than the basic size! *Photos are examples. Although they are "as-is," they are individually packaged and in unused condition. Dry sponges will soften when soaked in water, so please use them with confidence. These are "as-is" products, so please purchase them if you don't mind. These are different from the "new facial sponge, as-is 10 pieces" that I am also selling. If you want to buy a large quantity, please contact me! *Depending on the number of pieces, the shipping method may change, and there may be an additional charge. Thank you for your understanding.