JCB are the number 1 work boot sock in the UK. Perfect for all environments. These UK JCB thermasocks for men 6-8.5 have been created to keep your feet warm during those colder winter months. These amazing JCB thermal work boot sock come in black with a twist contrast and are 4 x warmer then your average cotton sock. The 1 pack JCB heat holding work boot socks feature a thick brushed cushioning to keep your feet snug, comfortable and warm all day.