If you work in an environment where you cannot have metal on you, for example, if you work in an airport, then this trojan boot is for you. With it being fully non-metallic, it is the ideal boot.It also has a protective midsole made of material very similar to ’kevlar’ which is Actually used in bullet-proof jackets. However, the material The boot is made in, is a non-metallic material, with the Advantage being the comfort and flexibility of the sole. This sole will help protect your foot against any sharp objects you may stand on, preventing a puncture on the boot. As this boot is a safety boot, with a safety standard of S3, it has the feel of a walking boot including the comfort and flexibility.