Found these cute zip around Key Cases on AliExpress. You can attach your MINI FOB to the outside, and keep your house and/or work keys safely zipped inside.
The listing says the Case is made of leather, but the inexpensive price point suggests that it’s probably made of vinyl or PU Leather.
This MINI Leather Key Case comes in Red, Black, Brown, White, and Coffee.
Click Here or click the photo, to purchase this non-OEM MINI Leather Key Case on AliExpress.
