Designed to be used with military and tactical-style boots, and for feet that hurt during or after activity, Thorlos Military Boot Over the Calf Socks are intended to enhance mobility and maintain foot health, even under demanding field training and combat conditions. US brand Thorlos say the socks have been clinically shown to reduce blisters, foot pain, pressures and moisture, by virtue of their Thor-lon development, an exclusively constructed fibre for superior softness, resilience, durability and moisture-wicking.Cushioning in the shin, instep and arch protects against abrasion and boot pressure, offering a better fit and increased comfort, while padded feet, especially in the ball and heel areas, provides maximum shock, impact shear and blister protection. Thorlos Military Boot Over the Calf Socks include Spandex tops for all day hold, and low profile toe seams that won’t rub or irritate feet.