... :2mm 3:density:0.30g/cm3 4:used for protecting head from heating sauna hat Namesauna hatMaterial95% wool+5 ... Fitting , Entertainment Felt, Wool Pad. The products are mainly used in mechanism, electromechanical, chemical industry, cement, textile industry, ... and can also be used for polishing marble, stainless steel, precision furniture, aircrafts, cars ...