VELCRO® Brand Iron On is designed for easy, heat-activated application. No sewing required and no stitch marks to hide. It is a convenient alternative to snaps, buttons, zippers, and hooks! Use your iron on high setting to activate the adhesive for a permanent bond to fabric. It bonds to most heat tolerant fabrics including cotton blends, polyester, fleece, suede, canvas, denim and nylon. It is machine washable and dry cleanable which means the bond withstands laundering. It is perfect for fabrics that are thick or difficult to sew.