The new love of my bag-making life. Firm, yet flexible sew-in dense interfacing. It’s forgiving and doesn’t hold the fold like those other guys. You can crumple a bag into a ball and it will bounce right back and stand up straight. Use it in place of fleece or batting in a structured bag. Great for table runners and placemats, too. Stiff Stuff = I need some of that stiff stuff to make my bag stand up.