Gelert one pack mens heat slip socks these gelert one pack mens heat slip socks offer maximum thermal insulation which holds more warm air close to skin keeping you warmer for longer the socks feature a fleece lining with anti slip grips to the sole finished with gelert branding mens socks fleece lining thermal construction anti slip grip on soles gelert branding 90 acrylic 5 nylon 4 polyester 1 elastane machine washable black mens 12