In a matter of seconds, your feet can be protected without changing your shoes, thanks to Pro-Tek-To shoe caps. These shoe caps slip easily over your own street shoes and strap firmly around the back of your heel. These are especially beneficial to the temporary employee or visitors to your plant. The OG3601 model is designed to fit over street shoes, including athletic shoes. While there is not an OSHA standard for over the shoe foot protection, it is required that they meet ANSI standard Z-41-1991 for 30 pounds of impact resistance.