When sourcing an inflatable tennis dome (air-supported structure), you must prioritize high-tenacity polyester fabric with a double-sided PVC coating. Ensure the material weight is at least 950g/m² to 1100g/m² for the outer membrane to guarantee structural integrity. Key technical features should include UV resistance, anti-fungal treatments, and a flame retardancy rating meeting international standards such as NFPA 701 or DIN 4102 B1. Additionally, verify the translucency levels of the fabric to maximize natural daylighting, which significantly reduces operational energy costs.