1.cleaning without detergent or soap 2.size can determined by you 3,High Temperature 4,Melafoam is a kind of low density, ope It can clean things with water no need detergent or soap,it is widely used in kitchen,bathroom,floor,ceiling,sofa,car,office euquipmemt,etc.Nano sponge also called melamine sponge,It is also can used for interior decoration in super market,gym because it is can soundproof, ...