The ultimate anti-blister double layer sock. Minimises friction on your foot to keep your feet comfortable. The fine inner sock is made from Meryl® that draws moisture away from the foot and transfers it to the outer sock. The dri-release® outer layer is great at drying to leave you feet feeling dry and comfortable. This double-layer construction prevents friction from occurring on your feet and blisters from appearing. The durable heel and toe sections help you put the miles in making Twin Skin® a trusted partner of many runners. The LYCRA® SPORT fibre ensures a close, comfortable fit. Features: Double-Layer Construction - Prevents friction and rubbing. Q-Skin Inner - Wicks away sweat and external moisture. DriRelease E.C.O. Outer - Ensures a rapid drytime. Double-layer fabric construction prevent friction on the foot, giving a blister free guarantee Lightweight and fine inner fabric effectively transfers moisture to the outer sock which in turn wicks moisture to the surface of the sock, keep the foot as dry as possible The outer fabric has Dry Release Cotton for a superb drying rate, and its durable heel and toe box yarn to give greater support and toughness in the pressure areas for a longer lasting sock Inner sock arch grip for support, and a great fit that acts as a second skin to prevent friction of the moving shoe Ergonomic foot shaped design with sophisticated stitch designs through the toes and heel to reduce seams and irritate you on your run