This Clover Fabric Folding Pen and Liquid makes everything from making pockets to quilting easier. Simply fill the pen with water and a few drops of the solution included, and draw a line where you want to fold. The fabric instantly becomes more flexible allowing you to crease it with your finger. Use this handy pen for a number of quilting applications as well as adding pockets to jeans and tops. Note that this pen should not be used on impermeable fabrics such as polyester.