Primaloft® Wool Sock.Similar Performance To The Feather Regarding Lightness Ratio And Breathability.Primaloft® Performs The Thermal Compensation Process, Its Doesn’T Overheat The Foot While Holding It At Proper Temperature In Any Condition.Water-Repellent Fiber.Two Layers Sock.Primaloft® Inner Layer Keeping The Inteligent Fiber In Contact With The Skin.Polyamide Outer Layers Which Offers Resistance Against Impacts Ad Scarfs.Elastic Band On The Foot To Prevent Blisters Or Abrasions.- Composition:60% Primaloft Yarn®, 31% Poliamida, 9% Fibra Lycra®.- Weight:77Gr/Pair.- Confortable Up To -25ºc.- Elastic Band On The Foot For Greater Fastenning.- Toe And Heel Reinforcement.- Smooth Seams.