Develius Mellow Configuration E from Danish &Tradition designed by Edward van Vliets. The design of the Develius Mellow sofa puts comfort and longevity first. Following the success of the original Develius series, released in 2018, van Vliet's continuous creative exploration and ambition to create new design environments has resulted in Develius Mellow, a modular sofa with an even softer seating experience and a removable cover. Made from FSC® certified wood, which supports the responsible environmental, social and economic management of the world's forests.