What are the most important factors in selecting thread for outdoor furniture upholstery?

Selecting the right thread for outdoor furniture upholstery is crucial to ensure longevity and performance. The most important factors include durability, weather resistance, and UV protection. Outdoor fabrics and threads must withstand harsh conditions like rain, sun, and temperature fluctuations. Look for threads made from synthetic materials like polyester or nylon, which offer superior strength and resistance to moisture and fading. Additionally, consider thread weight and colorfastness to maintain aesthetic appeal over time. By prioritizing these factors, you can ensure your outdoor furniture remains sturdy and visually appealing for years to come.