This is a highly effective product to protect from possible negative effects of cell phone, tablet, or any smart device that transmits a signal. Can be machine washed on cold or warm with a neutral detergent. Never use bleach since this destroys the metals. To completely block the signal you must completely wrap the item in question. It will limit and block as a flat barrier but your device can still be activated so it is not 100 % effective. This is not an EMF barrier. Most of these products are falsely sold as a universal barrier. There are different fabrics needed for different applications. We sell products that are easily tested. Example: if you wrap your phone in it it doesn't ring when you call it, or if you wrap your smart key in it your car does not recognize it until removed from the pouch.

• This is a flexible fabric that works very well for blocking and diminishing cell signals, WIFI signals, etc..
• This can be used to line your pockets, purse, or make a pouch for your cell phone, smart key, or anything that accepts or transmits these types of signals.
• Can also be used as a barrier between your stomach and phone,or tablet when pregnant
• It is polyester coated with nickel/ copper

This is a flexible fabric that works very well for blocking and diminishing cell signals, WIFI signals, etc..Tylson