Conventional sock wisdom dictates that you can either have padding for protection and comfort, or two layers for reduced friction. Padded socks are thick, double layer socks are thin. The 1000 Mile Fusion Sock breaks that mould with innovative design and material technology to provide a sock that offers everything: BLISTER FREE GUARANTEE, together with padded comfort and protection. CONTENT: Outer layer: 57% Nylon, 41% Tactel® 2% Spandex. Inner Layer: 100% Tactel® CARE & FIT GUIDANCE: Machine wash warm, No Bleach & No Tumble Dry.Cut barb with scissors to avoid damage to fabric. Pull sock on carefully to ensure the fitted heel and toe box sit on the foot correctly.