What are the most important factors in selecting zippers for outdoor furniture covers?

When selecting zippers for outdoor furniture covers, durability and weather resistance are the top priorities. High-quality zippers should withstand harsh conditions like UV rays, rain, and wind without corroding or breaking. Look for zippers made from materials like stainless steel or heavy-duty plastic, which resist rust and wear. Ease of use is another critical factor—zippers should glide smoothly to ensure hassle-free covering and uncovering. Additionally, consider the size and design of the zipper to ensure a snug fit that keeps dust, debris, and moisture out. By focusing on these factors, you can extend the lifespan of your outdoor furniture covers and maintain their protective function.