The Reformation Cassandra Sandals embody summer sophistication with their minimalist design and luxurious craftsmanship, perfect for elevating any outfit. The Reformation Cassandra Sandals embody summer sophistication with their minimalist design and luxurious craftsmanship, perfect for elevating any outfit. 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.