Handmade in Connecticut.  No two are exactly alike, there will be minor differences.  Approximate measurements:  opened up 10" x 5.5" and fastened 8" x 5.5".  This is handmade from cotton calico fabric, and fully lined with Faraday Fabric.  We test each Faraday phone sleeve we make with our own cell phones, and it successfully blocks the signal.  The phone pictured here is not included, it's just for size reference - it's an iPhone 7 Plus.

Faraday Fabric is trusted and used worldwide by military and law enforcement forensics investigators to block all wireless signals. Faraday Fabric helps with EMP protection, personal data and identity protection, signal isolation, harmful EMF radiation reduction, digital privacy, and more.  LAB TESTED & CERTIFIED - MIL STD 188-125 and IEEE 299-2006 shielding effectiveness confirmed from the manufacturer of this Faraday Fabric. 

Faraday Fabric uses a copper and nickel composition to block radio signals from low MHz all the way up to 40GHz. This is the same fabric that is used by military and law enforcement forensics investigators to block all wireless signals, including cell phone, WiFi, Bluetooth, and GPS. It is also used by civilians for EMP protection, personal data and identity protection, signal isolation in secure facilities, RF isolation for hardware and software testing, harmful EMF radiation reduction, anti-credit card skimming, digital privacy, and more.

These are handmade, and we are not responsible for results of using this case improperly, or for events that are beyond anyone's control.