The Speed Ropes have a fixed length. I walked out in front of it that you can adjust the length so as I have seen it at similar speed Ropes in the sports shop ... at the same price by the way. Okay that was not in the description, so I'm to blame, however, is another drawback that the cable expands after a while. Man jumping for a few minutes and it continues to grow. Moreover, it is quite stiff in cold weather when it so in winter transported in the sports bag in the trunk of the car and goes into training, unpack there, then it will take a while until it is elastic again ... From me, therefore no recommendation to buy. The 2 star there because of the good price.