Nestle Performance Nutrition, under its PowerBar brand, has debuted Iron Girl Energy Bar in a co-branding effort with the Athleta Iron Girl Event Series. Iron Girl is part of World Triathlon Corporation (WTC), producers of the Ford Ironman World Championship in Kailua-Kona, Hawaii. Iron Girl bars contains calcium, iron and B vitamins. They are available in two flavors: Strawberry & Cranberry and Cocoa Crunch.