the name says it all "purus." means not only pure, but also simple, honest, unadorned and natural, only renewable raw materials were used for this range, the brush body is made of high-quality certified Swiss beech wood and is stamped with bristles made of bio-based plastic, bio-based* means for "purus." that the plastic is not made from petroleum but from castor oil, this floor mop can be stored in a space-saving way due to its narrow shape and is equipped with a plastic thread, the narrow, dimensionally stable bristle field reduces the swirling of dust and dirt particles