Smartwool Men's All-Season Merino Base Layer Bottom

Under Armour Men's Packaged Base 3.0 Legging - Black

Men's Underwear and Baselayer

Men's Baselayer Bottoms

Men's Baselayer Bottoms

Men's Baselayer Bottoms

Smartwool Men's Thermal Merino Base Layer Bottom

Icebreaker Men's 200 Sonebula Long Sleeve High Neck Shirt

UA Base is a system of baselayers, numbered from 2.0 – 4.0, that takes you from cold to absolutely freezing temps. It uses a special negative grid

Under Armour Men's Packaged Base 3.0 Legging - Black

Men's Underwear and Baselayer

Icebreaker Men's 200 Oasis Leggings With Fly

From Icebreaker, these midweight merino base layer bottoms are designed to help regulate temperature during high-intensity activity. The 260 ZoneKnit™

Icebreaker Men's 200 ZoneKnit Base Layer Pants

Smartwool Women's All-Season Merino Base Leyar Bottom

Icebreaker Men's 200 ZoneKnit Base Layer Pants

Holiday Gift Guide

Ripzone Men's Peak Baselayer Top