The 1000 Mile Ultimate Lightweight Walking sock is a sock within a sock, perfect for country walks or long city days. Its unique double-layer construction features a 100% Tactel® inner layer that stays with the foot, effectively wicking away moisture. The soft wool-mix outer layer moves with the shoe, minimizing friction between the layers to prevent blisters and reduce wear. This combination of merino wool and Tactel® helps maintain a comfortable foot temperature. The design includes HeelPower grips to keep the sock firmly in place, reducing skin irritation caused by slipping. Suitable for 3-season walking in all boots, it also features arch bracing for added support. The 1000 Mile Guarantee covers blisters or wear within 1000 miles of use, provided care instructions are followed.