Our Armaly ProPlus polyester sponge is intended for home, auto and marine washing. Its large size and durability make it a great choice for larger general cleaning projects. This large polyester sponge has a honeycomb structure that makes it extremely absorbent and allows it to rinse completely. The Armaly ProPlus is durable, remains soft and pliable even when dry, is resistant to organic solvents, and can be sterilized by boiling. Because it can be repeatedly reused, it is a very economical polyester sponge.