After using the Ecoden Tencel cover for 3 years, I’m beyond impressed with the durability especially the zipper! It’s still as smooth and sturdy as the day I got it, which speaks volumes about the high-quality craftsmanship. No snags, no breaks, and it glides effortlessly every time. The Tencel fabric has held up beautifully, too soft, breathable, and looking as fresh as ever after numerous washes. I can confidently say this cover is built to last. Excellent product!