Do you have testing that proves that it works?

All of our cases incorporate our Radiation Shielding Technology, which is composed of proprietary blend of lead-free metals. This technology has been tested in an independent FCC accredited laboratory to show reductions of Electromagnetic Radiation of up to 99% (5G, Wi-Fi, cellular, etc.) and up to 92% of ELF (battery, AC power, etc.) cell phone radiation from your iPhone. The lab test results can be found on our website and we have placed the link here for your quick reference:

https://www.safesleevecases.com/pages/lab-tested