Ergonomics and adjustment to the user's shape. Impact resistant (200 joules). Anti-static footwear. Energy absorption in the heel. Penetration resistant. Oil resistant. Slip resistance. Resistance to water absorption and penetration. Cold insulation. Water resistance footwear. Resistance to non-extreme environmental factors under expected conditions of use. The materials from which it is made are safe and do not affect the safety or health of the user. They pose no risks or discomfort under expected conditions of use.