3 for 2 on all socks T&C's apply The Original Sock has been & continues to be an integral part of the 1000 Mile range for over 20 years. The 1000 Mile Original Sock is a sock within a sock. The inner layer stays with the foot, the outer layer moves with the shoe, eliminating friction on the skin & reducing wear. The inner & outer layers are made using the same high cotton mix yarn making this the perfect sock for everyday wear. The Y-stitch ankle allows the sock to sit flat to the foot for a more fitted design. The toe seam is knitted flat to reduce hard edges that can cause irritation around the toes. This reduces friction in the area therefore helping to reduce the development of a blister. Covered by 1000 Mile's unique BLISTER FREE guarantee – Double layer construction helps to eliminate friction between the foot & shoe, reducing wear & helping to prevent blisters. A reduced toe seam & fitted heel for added comfort Suitable for running, racket sports & gym work, as well as a superb everyday sock Covered by the 1000 Mile BLISTER FREE GUARANTEE!