Strap these aprons on over clothing to provide a layer of cut resistance that covers the front of the body from the chest to below the waist. They typically have straps or ties that fasten in the back to stay out of the way while you work.
The ANSI resistance levels for these aprons are based on the ANSI/ISEA 105 standards for body protection. The cut-resistance levels are on a scale from 1 to 5. The higher the rating, the better the protection.