Year round comfort with the durability to last the 1000 mile ultimate heavyweight walking sock is double layered with a moisture wicking tactel inner layer that stays with the foot combining with a soft wool mix outer layer that moves with the shoe a lack of friction between the layers prevents blisters and wearactivitywalking hikingcolour swatchgreengendermensperformancewickingadditional notesmachine washablebrand1000 milecolourgreen