Kansoon Adjustable Jump Rope ADJUSTABLE 10' SPEED ROPE with easy-to-use tension-screw collars DURABLE: this rope cable is made of a qualified thicken PVC covered steel wire, resistant to wear and tear as well as breakable, gives more control compared to PVC, Plastic and Leather Ropes. Experience a no tangling & no bending & small resistant & high speed jump rope workout ABS HIGH STRENGTH HANDLES feel comfortable and with good tight SMOOTHEST CIRCULAR MOTION- Perfect for Double Unders, MMA Training, Boxing, Cross fitness JUMP ROPE