If you like having some protection on your head against cool breezes and bugs, but donaTMt like how a typical cycling cap fits under your helmet, check out the Castelli WomenaTMs Head Thingy. The tubular-shaped polyester knit Head Thingy can wrap around your head to protect your ears, neck and upper part of your chest for those super cold days when you donaTMt want any breeze getting down your collar. Or you can use it as a face mask to make sure your nose and mouth donaTMt get frozen off in the wind chill. For slightly warmer days, the fabric is lightweight enough that you can use it as a headband to absorb sweat and keep your noggin protected.