Signal Blocker Pouches (North Ascot SL5)

Pouches for phones, car fobs, credit cards, etc to block signals (like a Faraday cage). There are 2 which have a pocket size of 10 cms x 18 cms. And one which has a pocket size of 10 cms x 19 cms. If you want them for a mobile phone, you need to add the depth of the phone to the width and height to see if it will fit. Please say which size you want