Hi, LSN - Thanks for the compliment! I have dimensions listed on mine, though there is no template.
I believe Michelle took the one off the front of the Summer Mini & ran with it. I took hers and ran! LOL!
It's a regular sized card (1/2 sheet of cardstock - finished size 5 1/2" by 4 1/4") with the front scored and then folded down diagonally. The tag is just shorter and less wide than a 1/4 sheet of cardstock. The size of the tag depends on how you hold the tag together.
Enjoy!