Servus Puncture-Resistant Insole Size 13(M)

This Servus Puncture-Resistant Insole is a great safety addition for your shoes. It can be used as an insole or midsole.The flexible steel insert is designed to provide protection from punctures from under the foot; however it is not compliant with the ASTM F2413 standard. A puncture resistant midsole must be an integral part of the footwear to meet the puncture resistance requirement of the ASTM F2413 standard for protective footwear.Adding this insole to your shoes will give you an extra measure of protection but the steel won t be uncomfortable thanks to the cushion cover.