The TUBA chair, created for Spanish brand Diabla, is a new addition to the world of lightweight stacking chairs. Its construction comprises of two support tubes, fifteen oversized curved cross bars, and two leg tubes with rounded ends. The chair boasts a clean aesthetic, thanks to its hidden fixing of the cross bar to supports, leaving visible welds only at the leg junctions. TUBA's aluminium construction ensures its resilience in all weather conditions, as it is resistant to rusting. Additionally, its versatile design allows for infinite stacking, making it an excellent choice for commercial applications.