I made these invitations for my 6 year old son's birthday party at the lake. I used the Cricut Life is a Beach cartridge - the snorkel guy. I did some at 4 inches, some at 4.5. If you make a 4 inch square card it will fit in a regular A2 size envelope. When you cut the layers they were at 2 1/2 inches & 2 3/4 inches. I used some tan CS from my stash, SU Pacific Point blue cardstock, pens, Ice Stickles, & inked the edges. I will be adding a video soon as well.