Bringing Primaloft® Insulation Expertise To Your Feet In The Ultimate Winter Warmer SockDesign Philosophy:- Cold Feet Are The Enemy Of The Winter Cyclist. Fear Not, Thanks To Endur´s Pro Sl Primaloft Sock Ii Cold Feet Will Be A Thing Of The Past.Primaloft®:- Primaloft® Is The Perfect Material To Help Keep Your Feet Warm For Those Cold Winter Rides. It´s High Warmth To Weight Ratio Ensures That You Get Maximum Warmth With Minimal Bulk. The Magic Of Primaloft Means That It Continues To Provide Some Insulation Even When Wet If You Get Caught Out By A Passing Rain Shower And Don´t Manage To Get Your Overshoes On In Time.Features:- Luxury Primaloft Gold/Silk Blend- Padded Toe And Metatarsal Terry- Stretch Arch Support- Long Cuff For Extra Warmth- A Winter Treat For Your FeetSpecifications:- Material: Elastane 5%, Wool 7%, Silk 8%, Polyester 35%, Nylon 45%