Tuned for speed and ready for heart-pounding sprint finishes, ARO5 is an aerodynamic and comfortably lightweight design made with a lightweight polycarbonate shell, EPS protective foam, and a Vane support structure. Integrated eyewear dock to securely stow your shades and keep them handy for quick and easy access. The BOA 360 FS1-1 fit system with TX1 Lace provides a soft textile feel and flexibility that lies flat against your head for seamless eyewear compatibility. X-STATIC moisture-wicking brow pad The MIPS System is designed to guard against angled impacts to the head.