Giro skyline ii helmet the skyline has been a long time favorite in our line and is a great helmet for recreational and beginning cyclists the simplicity of universal fit sizing combined with our adjustable acu dial fit system allows you to get the fit you want with just a simple turn of the dial of course its available with a range of colors and graphics too so you can find one that looks and feels custom made for you features snap fit visor in mold polycarbonate shell with eps liner acu