Large Bowl Cozy Pre-Cut Batting 8ct recommends you MUST use 100% cotton thread and 100% cotton fabrics ONLY. 100% cotton pre-cut batting to make a microwave bowl cozy. Made in the USA Instructions: Place pre-cut batting on the wrong side of a 10.5-inch square of cotton fabric. Using 100 % cotton thread, fold and stitch darts 1/4 inch away from the batting cut edge. Trim out fabric excess. Repeat with a second square of cotton and pre-cut batting. Put the right sides together and stitch around the outer edge. Leave an opening for turning. Turn and stitch the opening closed. Made of: 100% Cotton Needle Punched Does not Contain Scrim Loft: Low