A versatile staple, the Mason is a high-rise pant with a wide, relaxed leg. It features front pleating, side pockets, and a finished hem. A versatile staple, the Mason is a high-rise pant with a wide, relaxed leg. It features front pleating, side pockets, and a finished hem. 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.