The 1000 Mile Fusion Walking Sock breaks the mold with its innovative design and material technology.This sock is the first of it’s kind that offers not just the 1000 Mile double layer sock’s BLISTER-FREE GUARANTEE but padded comfort zones on the heel, toe and Achilles tendon. The padding combined with the high volume Merino wool gives warmth and volume perfect for Autumn/Winter right through until Spring.Mid-calf length for wear with high ankle walking footwear. Just what you need when you’re in the thick of it. Features include: Achilles Tendon protection: full length padded protection for the Achilles Tendon – the first sock to offer you this! Arch bracing: for additional support Padded comfort zones: padding on the toe, heel and ball area of the foot for extra comfort and protection Double layer construction: eliminates friction between foot and shoe, reducing wear and preventing blisters Tactel® inner layer: wicks away perspiration to keep feet dry