JACKSHIBO Steel Toe Indestructible Shoes are made of fabric uppers that can absorb 200±39 J forces. The rubber-protected edge of the steel toe cap is capable of guarding each move for you. These shoes are built to protect your feet from being punctured by sharp objects like nails. These shoes are best for people work in factories, chemicals plants, auto repairing and laboratories. The special lines of the sole have a strong grip, superior anti-skid performance, greatly enhance the safety.