Neck warmers

it can serve as a snood, beanie, headband, face protection against dust, or even an improvised bandage. That's exactly why it pays to have one in your backpack even when you don't expect to use it. Choose the material based on the season — thin synthetic for summer and sport, merino or fleece for the cold. For cycling and running, you'll appreciate that it has no seams to rub under a helmet. It tolerates frequent washing, so it can stay in your backpack all season long.