IT IS A VERY TIGHT FIT

What a fight!  It was nearly massacred by the time I decided the effort was going nowhere useful.  It was really tiresome trying to get the card into the envelope provided for it. There I was with one yellow envelope that had a tear in it and worse the for wear on its edges.

I was not going to be beaten.  I got out my paper trimmer and carefully took a couple of centimetres off the bottom of the card.  Success!  The card slid in.  Now, what was I to do with the scrappy-looking envelope.  Brainwave.....put the address label over the tear, which was on the upper right, about where you would place a postage stamp.   It did a good cover-up job.  As for the edges,  I think I can kid myself that they will not be noticed; not that much anyway. 

There are ten more envelopes that do not fit the cards.