A Vermelha chair in progress. At one time, Vermelha represented the Campanas’ greatest production challenge. Humberto hand-wove and knotted the original prototype from more than 1,600 feet of cotton rope, for a 1993 gallery show in São Paulo. When Massimo Morozzi expressed interest in producing the chair in the late ’90s, the brothers were flummoxed. Finally, after they provided Edra with a step-by-step instructional videotape, the chair went into production in 1998.