Men's Midweight Long Underwear Bottom 100% Merino Wool

Blanket-level warmth. Trail-ready function.

Inspired by the fearless namesake of New Hampshire’s wildest highway, this midweight base layer is built for movement, made for cold, and rooted in ecological care. Soft, insulating Merino wraps your legs in warmth while letting moisture escape—so you stay dry, comfortable, and ready to roam.

• Fabric: 100% Merino Wool
• Weight: 235 g/m² Interlock Knit
• Micron: 18.5 fine fibers
• Certifications: OEKO-TEX®, Woolmark®, RWS
• UPF: 50+
• Care: Machine wash + dry, no bleach, no softeners

Why it works

• Mid-rise fit with covered waistband = comfort next to skin
• Gusseted crotch reduces stress during movement
• Ribbed ankle cuffs stay put and layer cleanly
• Flatlock seams prevent chafing
• True to size with room to breathe

Use it for
Layering under jeans for winter chores, hiking through shoulder seasons, or sleeping warm in a tent when the frost rolls in. Pairs naturally with the Chocorua Crew or Isolation ¼ Zip.

Wisdom woven in
Merino’s natural thermoregulation means you stay warm when active, and dry when resting. The Kancamagus Bottom honors the land it’s named after—resilient, quiet, and built for the long haul.