Tow surfers have loved this rope for years. The “old school” is the first rope we produced specific to tow-surfing. 1 1/4″ diameter hollow core polypropylene material. All ropes float & do not absorb water. All HSA ropes incorporate a Delron thimble (PWC attachment point) to eliminate wear on polypropylene material. Protective vinyl sheath from the PWC contact point out 10 feet greatly reduces the risk of rope being sucked into an intake grate. This high quality rope is strong, light and has less drag in areas where windy conditions and high seas are common.