When we started out making rope hammocks back in the early 1970s, we used only cotton, because cotton was soft, and cotton was traditional. But Hatteras Hammocks has always been, at its heart, about innovation, and we always hoped for better for our customers, since this popular natural fiber is inherently limited in its long-term durability. So with the tremendous advances in synthetics in the years since, we finally got our wish for rope of rugged weatherability that actually had a softness to rival cotton. Today, we use only soft-spun polyester and our own branded synthetic, DuraCord®, for our rope. That means all the cotton feel for you, yet with the outdoor durability of a top-quality synthetic!