Tested in most conditions, probably the toughest HJ sock yet. Ideal for wearing whilst at work and in steel toe cap boots. Tough socks for tough jobs. Designed originally to be hard wearing socks for outdoor jobs, the Indestructible range continues to be as popular as ever. A blend of man-made fibres offers you an unrivalled combination of comfort and durability. The unique 12 month guarantee assures you that these British made HJ socks are as tough as boots.