Thermal underwear is known by many names — long johns, base layers, long underwear, skivvies, or even britches (for my Southern friends). No matter what you call them, they are a staple for anyone ...

Long underwear — a.k.a. long johns, thermals, base layers ... They are often woven from merino wool or technical synthetic fabrics that also have moisture-wicking and odor-reducing properties.

Naturally, their thermal underwear follows suit. Made from a premium blend of Merino wool and lyocell, these long johns offer a silky-smooth feel—without the need for a silk budget. Merino wool ...