The buried shielding layer provides a better value because unlike conductive, coated material, the buried shielding layer will not scratch off or lose its ESD static safe properties, providing a superior, longer lasting ESD safe container. Coated material is simply a standard Kraft corrugated sheet with the ESD properties painted, coated, or printed on the surface. The coating is fragile and the ESD properties are prone to scratch or rub off causing possible additional contamination. An example of this would be leads on a circuit board that scratch the inside of a box or if tape is removed from the exterior of the box. The more this occurs the more compromised the material becomes making the sensitive components inside susceptible to ElectroStatic Discharge (ESD).