The Reformation Maddox Slingback Heels feature a block heel, round toe, and ankle strap, combining comfort with a chic, low-heeled design. The Reformation Maddox Slingback Heels feature a block heel, round toe, and ankle strap, combining comfort with a chic, low-heeled design. Founded in 2009, Reformation is a revolutionary lifestyle brand combining stylish, vintage-inspired designs with sustainable practices. With each limited-edition collection, the LA-based brand empowers individuals who want to look beautiful and live sustainably.