They are 3x3 cards and I created the envelopes with Stampin' Ups! Simply Scored Diagonal Plate which is also a freebie during Sale-A-Bration.
As a demonstrator we get the perk of pre Sale-A-Bration items! You can earn Sale-A-Bration product January 22 - March 22. Contact me to place your $50 or more order and receive your choice of Sale-A-Bration product for free!
Stampin' Up! Demonstrator and Creative Coach