When you need a zipper that can handle tough conditions, this YKK #10 separating zipper is a top choice. Made with large molded Vislon teeth that glide smoothly even when wet or dirty. The black polyester tape is UV-resistant, so it won't break down in sunlight. It's a separating style, meaning the two sides come apart completely and easily reconnect by inserting the bottom pin. The double-sided metal slider lets you open it from inside or outside. Perfect for marine applications like boat canvas, bimini tops, and enclosures, as well as tents, heavy-duty jackets, sleeping bags, and gear bags. YKK is the gold standard in zippers, known for reliability and durability. Whether you're repairing old canvas or starting a DIY project, this zipper provides a professional, long-lasting solution. Don't settle for flimsy zippers that fail when you need them most – upgrade to YKK quality.