The 1000 Mile 4 season performance mens walking socks offer a comfortable & supportive fit & have an extended padded heel zone for Achilles tendon protection, as well as a tear-drop shaped padded zone for ankle bone coverage. The upper mid-foot cushioning delivers a soft feel, plus there is a flat toe seam to minimize rubbing. The socks feature arch bracing to lock the foot in place & ensure a tight & firm fit, whereas contoured big toe joint padding improves protection across the toes & under the ball of the foot. Temperature regulation & a proper air flow are provided by arch & top venting & the socks are machine washable at 30 degrees.