Fabric folding has never been easier with the help of the Clover Fabric Folding Pen. Simply add water with a mixture of 4 drops of the concentrated softening solution (included in the package) into the pen, draw lines on fabric then fold. No pressing required! Where the line was drawn, your fabric becomes pliable and easy to fold. Crease with fingertips. Makes folding fabric for patchwork, origami quilting, English paper piecing, sewing and other handcrafts easier. Not suitable for impermeable fabrics such as polyester and for spot sensitive fabrics. Additional Fabric Folding Pen Liquid can be purchased separately, see below.