I've heard of others who have had great success with the following:
"For tablerunners I really like Hobbs Thermore. It's a very thin batting for clothing or other projects without much loft. It sews well. I use fusible spray to hold my batting in place. The loft on the runners is not too great and is unlikely to tip a vase or something else on it. I get it at Hobby Lobby or Joanns with a coupon."
Found at the following site:
http://www.quiltingboard.com/main-f1...-t68267-2.html
Sometimes my mind can't remember every little name of everything wonderful item I can use in my quilting...so I have to google it! Hahaha
Nan