Whilst you may think these jersey's are primarily made for warmer weather, they're actually cold-weather friendly too. Of course ditching the sleeves in the heat means you can avoid developing t.shirt tan terror, but most importantly you're able to ride light and well ventilated.

In milder conditions, you'll find if you wear a long sleeved base underneath, there'll be no mass of fabric under the arms - preventing friction and prolonging freshness.