skarpety fox flexair knee brace sock fluorescent yellowThe Fox Flexair Knee Brace Sock in Fluorescent Yellow is a professional grade motocross sock designed for maximum comfort while riding with knee braces. Its high top construction and lightweight materials ensure cooling, fit, and durabilityeven in the harshest conditions. Product features: Special length for wearing over knee protectors Large mesh panel on the back for effective cooling Thin and lightweight material a blend of polyester and spandex