Don't laugh. These Giordana sleeves keep goosebumps at bay.
Giordana makes their arm warmers from Super Roubaix fabric for loads of warmth. Use these in conjunction with a vest and a baselayer and you can ride in your favorite short sleeve jersey nearly year-round. Great from mid 40's to around 60 degrees. These arm warmers are built to last several seasons, and despite their reasonably low price, their quality and beauty are second to none. It's signature Giordana -- you'll look pro, you'll feel pro, but you won't spend Assos dollars.