This was my experiment with using sweatshirt material. (Size Large.) I fused the Quilter's Grid to the outside of the sweatshirt so the softer, fuzzier side would be on the outside of the Amazing Puzzle Ball. The quilting cotton on the MELONS was a gift from the Gold Coast Quilt Guild in Boca Raton, FL. They were one of the first guilds I taught for where I brought an Amazing Puzzle Ball to share.