The 20 Best Base Layers to Keep You Warm All Winter Long

The best base layer tops and bottoms — from merino wool to bamboo — that'll keep you warm whether you're hiking, skiing or rock climbing this winter.

Smartwool Merino 250 Base Layer Crew (Pewter Blue/Lead), 43% OFF

Cold Weather Clothing Guide: Fabrics that Retain Heat, USA Blog and news articles from Iceland

The Best Base Layers for Women of 2024

The Best Men's Winter Running Apparel 2024

AJ Powell, Author at Gear Patrol

Smartwool Merino 250 Base Layer Crew (Pewter Blue/Lead), 43% OFF

Thermal Seamless Base Layer Top Black, 60% OFF

The 5 Best Base Layers of 2024

All the Best Hiking Gear for Your Outdoor Adventures

Kids Boy Compression Base Layer Thermal Sport Skins Under Gear Long Pant Legging

Under Armour ColdGear Leggings Tempered Steel/Reflective 1373833-558 at International Jock

Under Armour Men's ColdGear Leggings : : Clothing, Shoes & Accessories

Under Armour Mens Cold Gear Leggings - Grey, Michael Murphy Sports, Donegal

TELALEO Boys Thermal Compression Leggings Pants Youth Fleece Lined Base Layer Tights Cold Weather Heat Gear