A neck gaiter also keeps the sun off you when it’s warm. There are lots of versions out there that have SPF protection , sometimes even equivalent to 50—and they won’t rub off like sunscreen.

To that esteemed pantheon, I nominate the humble but affordable Merino Lightweight neckwear ($29) from Buff, the versatility of which is nearly unmatched. That’s right: a neck tube. But not just ...