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 mid-calf length 1000 Mile Fusion Walk Sock breaks that mould with innovative design and material technology to provide a sock that offers everything:The 1000 Mile double layer sock´s blisterfree guarantee with a soft durable outer and wicking inner, but with padded comfort and protection, including fulllength achilles tendon padding.Offers volume and warmth which is perfect for 3/4 season walking.