Made from a cashmere blend, the Florentina collared sweater by Reformation is soft and cozy with a wear-with-anything vibe. Made from a cashmere blend, the Florentina collared sweater by Reformation is soft and cozy with a wear-with-anything vibe. 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.