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I used iron on 'firm' pellon on the back side of one of the fabrics. That gave the table runner 'body', and allowed me to use the tube method, too. You could probably do the same thing with iron on batting, or you could sew batting on the back of one of the fabrics and then make the tube.
Thank you for sharing.. great gift idea...
The pattern I use is 9" wide center fabric and 18" wide border fabric but the same instructions. Batting or not up to you.
I use 12"WOF for center and 24" WOF border. It comes to 17 1/2 " wide and 41" inches long. Thiis my favorite size.
I am enjoying the Secret Pals.