Trail Gear Picks
Trail Gear Picks
About
Footwear & Poles
Camp Sleep
Camp Furniture
Backpacks
Tents & Hammocks
Water & Coolers
Camp Kitchen
Lights
Apparel
Gear & Safety
Home
/
Apparel
Apparel
Base layers, socks and the clothes you hike in, chosen for the weather you hike in.
In this category
1 guide
Updated Nov 2026.
Buying guides
1 guide
Apparel
Our pick
Smartwool Classic Thermal Merino Crew
27 compared · about $125
The Best Base Layers
Six base layers and long underwear sets for hiking in the cold, merino wool and synthetic, from about $10 to $150. Tops and bottoms, women's cuts, and the weight to buy for your weather.