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The batting strips used are Katahdin On-A-Roll[/h][h=1]
https://www.fatquartershop.com/katah...cotton-batting [/h] I don't know why it's organic cotton. Seems silly for a rug.
You can cut your batting strips but it's time consuming. The tedious part for me was making the strips.. Be sure and keep your jelly roll strips in order. How they are rolled up makes a pleasing rug as the colors are separated for you.