• Active Airflow 4-layer protection system Layer 1: Flexible hard shell gives protection and ability to slide on hard surfaces Layer 2: Tear-resistant Armortex® fabric resists tearing or catching Layer 3: Body-mapped, impact-absorbing SmartFlex pads are flexible as you ride and harden on impact Layer 4: Soft inner foam keeps pads secure and comfortable • Designed for heavy-duty conditions, geared for your most extreme rides • CE-1621-1 certification • Adjustable hook and loop fit-straps for customized comfort, fit, and security • Locking zipper on knee guard won't slide down and allows for easy on and off without removing shoes • Technical mesh back for breathability • Flatlock stitching to reduce irritation