Compression sleeve with open patella in a comfort flex design BEST FOR: Helps prevent and relieve mild to moderate pain associated with arthritis, bursitis, tendonitis, patella alignment Anatomical pre-curved compression-fit sleeve design Four-way stretch spandex [elastane] mesh at back of knee for comfortable flex and ventilation Convenient finger tabs offer easy grip pull when fitting Non-slip silicone gripper pattern lining Spandex [elastane] binding for comfort and long lasting wear N-Tex™ air flow vented moisture-wicking neoprene