The ALPINESTARS MTB Pants Racer is ergonomically designed to accommodate knee protection. It features polyester fabric reinforcement in the seat (600D) and leg area (600D), ribbed stretch panels at the back of the legs and knees, and a water-resistant treatment for enhanced moisture performance. Additionally, the pants come with four-way stretch inserts and a silicone finish on the inner waistband to prevent slipping. These durable and highly functional pants are perfect for serious mountain bikers seeking comfort, protection, and freedom of movement.