The Darn Tough Style T4021 Tactical Midweight Boot Sock is a mid-calf merino wool boot sock knit with midweight cushion density under the foot. Midweight is the workhorse cushion profile in tactical rotation — enough density to absorb impact from long patrols and training, compact enough to fit inside tactical boots without pressure points. True Seamless toe fusion removes the toe-box seam that causes hot spots over extended wear.
The Foliage Green colorway the muted tactical green — matches woodland and ranger-green kit. The merino wool blend wicks sweat, regulates temperature across climates, and resists odor through consecutive wears — the reason tactical users run merino instead of cotton. Mid-calf height clears the top of a standard tactical boot.
Darn Tough is family-owned and knits every pair at their mill in Northfield, Vermont. Lifetime guarantee covers the tactical line the same way it covers boot and hiking socks.






