Rubber-Cal Closed Cell Sponge Rubber Blend 1/16 in. x 39 in. x 78 in. Black Foam Rubber Sheet 02-127-0062 - The Home Depot
Amazon.com: 200 Sheets Tear Away Stabilizer Backing Embroidery Precut Sheets Black White Fabric Stabilizer for Machine Embroidery Hand Sewing Hoops Quilting, Medium Weight 2.1 oz (8 x 8 Inch)