... is one kind of thee biodegradation,thenon -toxic ecology environmetal protection material.Specifications:Material: 95% australian woolColor: natural wool color ... and crisscross are wools characteristic.By overlapping makes the felt with wool own lamella after the fulling.Used in ... ,silencing;fire retardant,insulation. Polishingt:marble,crystal,glass,jedeware,furniture,stainless steel plate wool pad