We offer this heavy duty set of two ropes made of five sixteenth inch braided nylon rope. They are very strong and recommended for use with our larger hammocks especially when two or more people will be in the hammock. A total of forty feet of rope, each twenty foot length is tied into a loop with a fisherman's knot. This allows you to throw the loop of rope over a branch, rafter, around the trunk of a tree or post, even a screw eye and pass the rope through itself for easy set up and take down--no knots to untie!