Speed Rope Jumping for Everybody. I bet you always wondered how it is possible to jump about 200 or more times per minute and perform double unders in a way,which looks easier to do than the single jump for most of the people. It is not necessary to be a superman/superwoman to achieve it. You just need a proper speed jump rope and some action. Jumpmania speed rope is light,durable jump rope ideal for crossfits,double unders and other exercises. All sorts of athletes will benefit from using this cable jump rope. Its innovative design maximizes your double under scores.It is easy to achieve maximum rotations per second-5-6/sec. Although it is designed with highly flexible abrasion resistant Thermoplastic Polyurethane black coated wire it is recommended mainly for indoor use. Try to avoid using it on abrasive surfaces if possible. Jumpmania speed jump rope is a one size fits all type of rope. All you need to do is simply measure rope by standing on the middle of the rope and the end of the handles come up to the top of the jumper"s shoulders. This excellent cable jump rope will fit anyone up to up to 6" 6" tall. It is very easy to adjust the length with an easy screw/lock using a screw driver. You need to make sure it is clamped tight before jumping. Another option you can do is just cut off the extra cable. This type of rope is also recommended for advanced cardio training. If you are looking for fast and intense workouts then you need the ultra speed jump rope from Jumpmania. If you want to improve your durability and health in general just go to the top of this Amazon page and click orange buy button now,before price of this great product will go up soon!