This Mudtools Mudsponge kit includes all three sponges offered by Mudtools. The White Finishing sponge is made with a tight-cell material and is less absorbent than the Blue Workhorse sponge. It is excellent for finishing work, final detail and clean-up of surfaces and won’t pull out grog or other materials in the clay body. Think of it like a chamois sponge. The Orange Absorbent sponge is the perfect throwing sponge. More absorbent than the White Finishing sponge and the Blue Workhorse sponge, it is the sponge  that is perfect to use for throwing. The Blue Workhorse sponge is a great all-purpose sponge made of an open cell material that is very absorbent. The Mudsponges are shaped like a traditional potters rib to fit comfortably in the palm of your hand. Dyed with a natural pigment, the color will fade with use. If you can't decide which Mudsponge to buy, now you don't have too as this kit contains all three! Mudsponges are made of an incredibly durable and environmentally friendly material, that is biodegradable. Mudsponges are compressed for economy of space and for the fun of watching them expand when introduced to water the first time.