HJ Hall Commando HJ3000 Wool Rich Military Boot Walking Socks / UK Sizes 3-6, 6-11 and 11-13 / Black, Olive, Airforce, Granary and Navy. HJ have been making socks for various military and service organisations for many years – they are now the experts in manufacturing outdoor socks. For extra warmth and ultimate comfort there is always a HJ outdoor sock to suit your needs. HJ Halls HJ3000 Commando socks are designed to NATO defence standards and developed for UK Military. They are the first line of defence for your feet, and made from wool rich yarn these half hose socks are the ultimate in hardwearing outdoor socks, providing both comfort and strength.