Good base layers should be formfitting — not tight ... and there are cheaper alternatives out there that will better suit those who are simply looking to warm up an urban commute.

Next comes what we generally think of as base layers: relatively tight-fitting but not overly restrictive pants and shirt with the dual purpose of insulating in cold weather and wicking sweat in hot.

This amazing fabric comes in several different weights that suit varying activities. Fortunately, we’ve got an easy trick to tell which merino wool base layer is right for you. Merino wool base ...