The Mabu cleaning cloth is made from 100% natural wood fiber. It features an 8-layer design that promotes durability yet provides for a soft touch. An open weave means that debris is not trapped, so the cloth can be rinsed thoroughly to avoid the sour smells common with ordinary sponges and cloths. A Mabu cleans and dries with a single stroke. You can use it with soap, but the Mabu cloth performs great with plain water.