The under the helmet skull cap goes a long way to making cold-weather rides more fun and enjoyable. There are certainly a lot of skull caps to choose from but the Giro Ambient Skull Cap is fast becoming a staff favorite thanks to its highly refined features.
First, the cap is slightly on the thinner side and has what Giro calls "smart seams" so it does not take up a lot of helmet space allowing it will work even if your helmet does not have much room left to adjust larger. The Ambient is still plenty warm thanks to a windstopper front panel, thermafleece lining, and flaps that cover the ears with a perfectly comfortable light tension. The small brim is quite stylish and features a reflective detail, plus a reflective detail on the back for low light visibility.
Select S/M or L/XL.