To use this handy adhesive, pre-wash all material without fabric softener and pre-test before the final application. Heat your iron to medium heat with no steam. Turn the item inside out or turn over. Then measure and press the hem onto the fabric. Place tape inside of the new folded hem, hold iron on hem for 3-5 seconds--until the entire surface is bonded.Details:3/4" x 8yd. (19mm x 7.3m)For heavy, dark fabricsNo sewing