Twisted Poly Rope: This polypropylene rope is the most widely used synthetic rope. Constructed of three strands of polypropylene twisted together to produce a high quality rope. It is resistant to acids, oils, grease, gasoline and most chemicals. THIS ROPE IS DESIGNED TO BE TOUGH. Polypropylene is a light weight material that is abrasion resistant and its elasticity lies between Nylon and Manila. This material will float.