SUGOi Firewall Socks 100% Polyester Face and Back, 100% Pu Laminate Made in the USA and Imported Firewall construction offers protection against cold air and rain Flat seam construction allows for low profile fit inside a fitted riding shoe Moisture transferring and breathable fabric Firewall construction offers protection against cold air and rain Flat seam construction allows for low profile fit inside a fitted riding shoe Moisture transferring, warm wicking, breathable, water and wind resistant fabric