If you"re looking for a powerful and effective cardio workout, the LifelineUSA Heavy Weighted Speed Rope is for you. The rope weighs .75 lbs. with the weight in the rope -not in the handles, bringing intense cardio and strength training benefits to a comfortable and extremely smooth action commercial grade rope. Features include high-tech, ball bearing handles for smooth rotation, and two sliding rope adjustors that make precise rope sizing quick and easy. It’s used and recommended by recognized fitness experts and was developed by jump rope expert Bobby Hinds, the "Jump Rope King" and includes Bobby’s jump rope book which shows you how to progress into new jump rope movements that will challenge you as you progress and keep the results coming. The rope comes with a Lifetime Warranty – it’s that good.