Tactical Boot Heavyweight
$33.95Our Extreme Cold Weather/Mountaineering boot sock designed for extreme cold climates or rugged terrain. This is our warmest sock, featuring full terry loop cushioning throughout for maximum warmth. Elastic support at arch. Reinforced heel and toe for increased durability. USAF Safe to Fly Certified and NAVAIR SOA Approved.
Reddit mentions
“Fox River doesn't make anything close to a Darn Tough T4033 the last I looked. It's simply the thickest highest content Merino Wool sock I've ever been able to find. It list what…”
“Darn Tough T4033. The thickest highest content Merino Wool Sock I have seen yet. They do tend to wear quicker than my other Darn Tough socks but since they have a lifetime warranty…”
“I have two that I use mainly and this is after buying a few different ones over the course of about ten years or so. I started with just one of their normal crew socks which lasted…”