Darn Tough Heavyweight Boot Sock - Full Cushion

Extreme Cold Weather / Mountaineering Boot Sock – Maximum Warmth. Zero Compromises.

The Warmest Sock in the Game. Period. 

Built for the coldest conditions and the roughest terrain, this is the ultimate extreme cold weather sock. Whether you’re trekking through the mountains, standing post in sub-zero temps, or braving the tundra, this extra-cushion Merino wool sock is your go-to for warmth, comfort, and durability.

Featuring full terry loop cushioning from toe to calf, reinforced impact zones, and fine gauge knitting for a snug, blister-free fit. Fast-wicking and naturally antimicrobial, this sock stays dry, stays warm, and stays ready. It’s the highest density sock we offer—because the job doesn’t stop for the weather.

Why We Love It:

This is the sock you wear when failure isn't an option. Merino wool, tactical durability, and max insulation in one rugged boot-length package.

FEATURES

• Performance Fit: No slipping, no bunching, and no blisters.
• Fine Gauge Knitting: Unprecedented durability and our unique “put it on, forget it’s on” feel.
• Fast Action Wicking: Pulls moisture away from skin. Fast drying.
• All Weather Performance: Cool in the summer, warm in the winter.
• Naturally Antimicrobial: Repels bacteria and odor.
• Guaranteed For Life: No strings. No conditions. For life.
• Merino Wool: The ultimate fiber for breath ability and comfort in all conditions.

SPECS

• Extra Cushion: Our thickest, burliest and highest density cushioning makes for a big, bad monster of a sock.
• Boot Height: Sits mid-calf for added protection and warmth. A sturdy companion.
• 80% Merino Wool 19% Nylon 1% Lycra Spandex

Sock Care
To help ensure many happy miles with your Darn Tough Vermont socks we recommend that you machine wash them in warm water on gentle cycle with socks in-side out. Do not bleach. Tumble dry on low. Do not dry clean.

Size + Fit: