Selecting outdoor furniture for a rooftop acoustic estimation lab requires careful consideration of durability, weather resistance, and functionality. Since the lab is exposed to the elements, opt for materials like powder-coated aluminum, teak, or high-density polyethylene (HDPE) that can withstand sun, rain, and wind. Avoid materials that absorb sound, such as thick cushions, as they may interfere with acoustic measurements. Modular or lightweight furniture is ideal for easy reconfiguration during experiments. Additionally, prioritize low-maintenance designs to ensure longevity. Finally, consider aesthetics to create a professional yet inviting workspace. By balancing practicality and performance, you can create an optimal environment for acoustic research.