The AC4™ is constructed with a deep, Y-gore heel pocket, anatomical left/right design, and OS1st’s signature C-Zone™ Technology that uses varying levels of compression to achieve the best fit possible while providing arch support. The double tabbed sock top is designed to prevent blisters and slipping.
Made with anti-microbial silver-ion treated micro-fiber nylon and naturally moisture-wicking nano-bamboo charcoal fibers on 200-needle machines, the AC4™ Active Comfort sock is exceptionally constructed to endure long workouts while being just as comfortable working from home or relaxing on the couch.
AC4