The perfect finish for any costume edging. This is the wonder elastic, I use this to cover all of my mistakes and to edge the panty, armholes, neckline and sometimes use it right on the costume just to add stripes or accents without stretching. When stretched it makes an amazing edge because it has a natural fold, you just zig zag on and stretch as you go for the perfect edging. I'm a beginner seamstress at best and it's the easiest thing to use. Try it you'll like it.