The Reformation Campbell Short-Sleeve Polo Sweater Top is designed for a relaxed fit, offering a casual yet chic look. The Reformation Campbell Short-Sleeve Polo Sweater Top is designed for a relaxed fit, offering a casual yet chic look. 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.