This outdoor seating system derives its name from the soft and sinuous, distinctive butterfly shape, created by the outer corner formed by its armrest and backrest. The modular structure for B&B Italia is shaped around an ottoman: the base piece, it becomes a central or terminal element, when integrated with the backrest and/or the armrest. The combination of elements, using a simple joint system, allows to set up various configurations. Completely upholstered, this first textile sofa in B&B Italia Outdoor collection is designed for outdoor use, with the same quality and comfort that characterizes indoor seating. The system also includes a family of complements: their outline perfectly follows the lines of the sofa. They include round, square and rectangular low tables and a small table, and feature a large weave pattern, that wraps around the grey painted aluminium frame.