The latest evolution of a longtime favourite design the skyline ii delivers fit and comfort that rivals giro39s best helmets with a value thats easy on the wallet a sleek visor delivers a little shade and shelter and a single universal fit size with their acu dial system lets you quickly dial in fit adjustments on the fly the skyline ii is available in a range of colours so you can be seen how you want to be seen acu dial the acu dial system combines single handed adjustment with a