Product Details Heavy wool for optimal warmth Ergonomic, foot-shaped design for optimal fit Ribs at gusset and around the arch keep the socks in place Thin toe seams to avoid chafing Heat and flame protection Certifications CE category Category II EN ISO 14116 - Protective Clothing Against Flame Index 3 WE RECOMMEND YOU SPEAK TO US BEFORE MAKING ANY PURCHASE OF PROTECWORK ITEMS TO ENSURE THEY ARE APPROPRIATE FOR THEIR INTENDED INDUSTRY USE. WE ARE VERY HAPPY TO HELP WITH AN ASSESSMENT OF THIS FOR YOUR BUSINESS Materials and Fabric 44% wool, 44% viscose FR, 11% polyamide, 1% elastane.   Washing Instructions Machine wash 60 degrees C.Do not bleach.Do not tumble dry.Do not iron.Dry cleaning solvents   We deliver Snickers 9264 ProtecWork FR Heavy Wool Insulated Socks worldwide. We specialise in shipping almost anywhere in the world securely at competitive prices - across UK, US, Canada, Ireland, New Zealand, Europe - securely and fast at competitive prices