The Steady Betty is a foam substance that grips fabric and does not melt when ironed. When you iron your blocks or patches, the fabric won't move or slide around. It comes in several different forms, such as a 14" x 14" board, or an ironing board cover. It works great and I like it, but it can get rather expensive. I've found that covering my ironing board with cotton duck works just as well. Having said that, I have purchased Steady Betty foam strips for my rulers. No more slipping while I'm cutting fabric.
