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, shapely sweeping set as an accessory, always ready to hand place on the work surface or store in a space-saving way, the practical thumb recess allows easy release of the hand wiper from the bucket, the narrow hand wiper can be firmly clicked into the shapely bucket