The outside of the envelope shows a picture of a different cross and a little blessing. How nice.
The inside of the envelope is divided into two parts. The first informs us how we're to use the cross (keep in pocket as daily reminder), and it has a disclaimer saying it doesn't actually do anything.
The second part of the envelope serves a different purpose entirely. It gets us up to speed on this Jesus fellow and what he never did, but still remeained great. Jesus gets a lot of noteriety in this letter.
Speaking of the letter...