Cold head, frost-nipped ears... there are few things more likely to have you heading early for the nearest coffee stop. Aside from helmets themselves, pick the right cycling cap, headband or neck warmer to keep your head snug under your helmet and it could make all the difference.
Neck warmers can double for head gear and caps dunked in cold water can act as air conditioning on a hot day. In short, there's no limit to how you wear these. Whichever you pick, they're the ultimate in low cost versatility, and could even add a splash of colour to your outfit.