The KWF Professional symbol is only awarded to safety clothing and forestry equipment that has passed all practical tests by the Kuratorium für Waldarbeit und Forsttechnik (German Board of Trustees for Forestry Work and Technology) over a one year period. For this reason, forestry professionals test the products in continuous operation. The requirements conform to the state of technology in efficiency, occupational safety, ergonomics and environmental sustainability. The tests comprise of technical measurements, forest operational tests and field surveys. The wear properties, durability, care and features are assessed.