The Best Base Layers, 2018: Merino Wool, Under Armour, More

We asked runners, cyclists, skiers, and hikers to recommend their favorite cold-weather base layers. Their picks include tech fabrics and merino wool from Icebreaker, Smartwool, Tracksmith, Nike, Under Armour, Craft, Mammut, and more.
Instead of padded cycling tights, which he says never seem to fit right, Walton prefers wearing leg warmers on colder days, saying that you want the most protection over the areas on your body that break the wind. When cycling, that means the knees, not the working muscles of the upper leg that are covered by a regular short. “Pearl Izumi is always good because they’re a staple in the cycling world,” he says, and these leg warmers let you wear your favorite cycling shorts while protecting the rest of your legs.
Blended with Lycra, this similar wool half-zip for women offers unlimited mobility without sacrificing warmth.

Men's Intraknit Thermal Merino Base Layer Crew col. Black

The 5 Best Base Layers of 2024

Merino.tech Merino Wool Base Layer Mens Bottom Pants 100% Merino Wool Lightweight Thermal Underwear Long Johns + Wool Socks (Small, 165 Camel) : : Clothing, Shoes & Accessories

Smartwool Classic Thermal Merino Base Layer Crew Top - Men's

Executable negative sunset under armour merino wool base layer Net Pharmacology Approval

The Gear Guy's Favorite Synthetic Base Layers

The Best Base Layers, 2018: Merino Wool, Under Armour, More

Review: Santini Grido Thermal Unisex Long Sleeve Base Layer

The Best Thermal Underwear of 2024, Tested and Reviewed

Men's Base Layer Tops - Active, Outdoor, & Tactical – Born Primitive

Top 10 Men's Active Base Layers

Under Armour Pursuit Bib In Black For Men Lyst, 51% OFF