Merino wool is a great choice for cold weather activities because it can absorb up to 30% its weight in moisture. "This top offers everything I could ask for in a base layer," says Thompson. It's flexible, lightweight, and moisture-wicking, ensuring warmth and dryness without feeling weighed down.

"The price tag may be on the higher side for a shirt, but as soon as I felt the buttery, soft, and luxurious fabric against my skin, I understood its value," says Talene Appleton, NASM, Fitness and Commerce Editor. It's a splurge, yes, but it looks and feels so good that you'll be comfortable wearing it on its own for casual activities in or out of the house on chilly days. With a choice of six modern earth tones, there's a color to suit nearly everyone's preference.

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