Enhanced Mobility and Comfort: The design, often featuring pleats, darts, or articulated paneling, provides extra fabric and roominess in the knee region. This allows the wearer to bend, squat, or crawl without the pants feeling tight or restrictive, improving overall comfort and range of motion. Durability and Reinforcement: The knee area of pants is a high-stress point and prone to wear and tear. The extra layer of fabric or reinforced stitching adds strength to this area, helping to prevent holes and tears, especially in workwear, tactical pants, or outdoor activity clothing.