Twin pack - Each packet contains 2 pairs of socks in the chosen colour Single layer Top and arch ventilation mesh allows the foot to breathe and maintains an even temperature Arch bracing for additional support and custom fit Flat toe seam Extra padding for toe and heel Heel padding extends to cover achilles tendon 59% Recycled Content Sizing by UK shoe size Content - 59% REPREVE Nylon 6, 18% Polyamide, 12% Acrylic, 9% Wool, 2% Elastane