The FlexArena infrastructure for soccer enhances the design of the classic “British stadium”. It concerns: abolition of dividing barriers, covered stands close to each other and as close as possible to the playing field, enhancement of the hospitality sector, reduced capacity but optimized to ensure a high occupancy rate for the entire season, the significant presence of areas dedicated to catering and commercial activities inside and outside the stadium. The industrial patent for modular grandstands, of which FlexArena is the owner, guarantees a quick assembly, low costs, and optimization of the spaces related to services for teams on one side of the grandstand and rooms for commercial activities opposite side to the first. By dividing the areas between sport and commercial, it makes the facility functional 7 days a week. Thanks to the patented technical/architectural system that exploits the mechanical properties of steel, the stadium can also host large outdoor concerts without the stage interfering with the turf. Comfort, maximum security, and digitized services guarantee a unique and complete involvement for all fans.