He wondered if it was a bit delicate to travel through the mail. I was thinking the same thing when I received it - although it was quite tough to open with a letter opener. I can report that it traveled very well (he did have card inside to give it some thickness), although for some reason it needed two barcodes to get here.
With one of Eric's great cards inside.
One of the four new-ish Gifts of Friendship stamp from a joint issue with Japan to celebrate the centenary of a gift of Dogwood trees, alongside the 2012 Cherry Blossoms - pretty stamps for Mother's Day.