Baselayer Bottoms, Active Range Thermal Work Bottoms

Active Pro Baselayer thermal work bottoms keeps you warm in cooler conditions. Designed to sit tight next to the skin and made from a specially engine

Soft, breathable and naturally odor resistant, the ultrafine merino wool of the men's REI Co-op Merino 185 base layer bottoms is beloved for sweating

Merino 185 Base Layer Bottoms - Men's Tall Sizes

The Best Men's Base Layers of 2024

Best Merino Wool Leggings For Base Layer 2024

200 ZoneKnit™ Merino Thermal Leggings - Icebreaker (US)

Lightweight Base Layer Pants

RedHead Elite Lightweight Base Layer Pants for Men

REI Co-op Midweight Base Layer Tights - Women's Petite Sizes

The best snow pants for 2023

Men's Summit Thermal Pants, Men's Base Layers

M's Thermal Midlayer Bottom

Midweight base layer bottoms perfect for skiing, winter hiking, or cold-weather layering, the 260 Tech Leggings With Fly are a warmer version of our

Men's Merino 260 Tech Thermal Leggings With Fly