Pair Myrtle with a long-sleeved top underneath, or go simple and clean and wear on its own. This is a sleeveless sweater style that emanates versatility. Pair Myrtle with a long-sleeved top underneath, or go simple and clean and wear on its own. This is a sleeveless sweater style that emanates versatility. 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.