Giro created the Bishop for rider in search of the classic Giro fit but in need of an extra-large size. Inspired by the sleek lines and serious ventilation for their Revel and Verona, this helmet is equally at home on pavement and dirt, and its In-Mold construction keeps it light without compromising durability. The on-the-fly adjustable Acu Dial system makes it easy to custom-tune the fit, for maximum comfort and stability. All Giro helmets are designed to reduce as much energy as possible while meeting and exceeding stringent safety standards. The goal of Giro's MIPS-equipped helmet is to reduce rotational forces.