Yaheetech 1.5'' 40ft 50ft& Battle Rope Strength & Core Training Poly/FDY Undulation Workout Battling Heat shrink caps on the ends,high tensile strength,add resistance to your workout. Anti-slip handle Covered with special rubber belt for greater griping power. Yellow tracking line, convenient for maintenance. Improve your cardio and build your core strength,build stamina,Increase VO2 levels,improve cardiovascular health. Versatile training equipment, easy to handle in your daily life.