Selecting outdoor furniture for a rooftop acoustic variation lab requires careful consideration of durability, weather resistance, and acoustic performance. Start by choosing materials like aluminum, teak, or synthetic wicker, which withstand harsh weather conditions while maintaining structural integrity. Opt for designs that minimize sound reflection, such as perforated or textured surfaces, to enhance acoustic testing accuracy. Ensure the furniture is lightweight yet stable to avoid wind-related disturbances. Finally, prioritize low-maintenance pieces with UV-resistant coatings to prolong lifespan in exposed environments. By balancing functionality and durability, you can create an optimal rooftop lab setup.