This is totally true. I saw it on Planet Earth.
MOUSEWARMING GREETING CARD
Designed by Lanther Black from their brand new Planet Erf collection.
Size: 127x177mm (fits as Royal Mail standard size letter)
Printed on a luxury textured FSC board. This means that the paper has been sourced in an environmentally-friendly, socially responsible way. The envelope is also 100% recycled kraft brown. Woohoo!
Blank inside for your own message.