Review on Mengshen Blocking Anti Hacking Protector Wireless by Bryce Wohlman

I purchased this item to prevent the fob's reinforcement from being hacked and I can confirm that it blocks the signals coming in and out of the fob. It is made of faux leather (plastic) with an internal signal-blocking fabric that closes and secures with Velcro. It seems well done. It is small enough to be easily carried in your pocket or purse. It's too small for the iPhone 6, and I suspect it's too small for most other modern smartphones, especially when in a case.