Darn Tough T4033 Tactical Boot Full Cushion Heavyweight Sock

The Darn Tough T4033 is a heavyweight merino wool boot sock with full terry loop cushioning, designed for extreme cold or rugged terrain. Darn Tough calls it its warmest sock and pairs it with military combat boots, tactical boots and hiking boots. It has elastic arch support and a reinforced heel and toe, and it is Berry Amendment compliant, USAF Safe to Fly certified and NAVAIR SOA approved. It rises about 11 inches from heel to cuff and is unconditionally guaranteed for life. Darn Tough's product page describes its tactical socks as "made in the USA," and its About page says "Still Made in Vermont, USA."

Still Made in Vermont, USA Verified on the maker's site Nov 2, 2026