This natural fiber is one of the best materials for trapping warmth. “My No. 1 recommendation for long underwear is merino wool,” says Sarah Savala, a gear expert and customer-care supervisor ...

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 ...

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 ...

Layering is not a complicated thing. It's the process of adding and removing layers of clothing to keep your body comfortable in changing weather and temperature conditions.

We talk about the benefits of merino wool in technical clothing a lot here, but when it comes to base layers, and especially underwear in the most literal sense, this magical material really does ...

Think long underwear and socks ... You’re going to be miserable if this layer itches and chafes. Fortunately, merino wool isn’t your typical wool. Merino wool comes from merino sheep, usually ...