Rope

https://en.wikipedia.org/wiki/Rope

Jump
http://www.jumprm.com/
http://www.jumprope.com/

Cut
https://www.cuttherope.net/

Institute
http://www.jumpropeinstitute.com/

Hand made
http://ropeinternational.com/

Tube
https://www.youtube.com/results?search_query=rope

Slides
http://www.slideshare.net/search/slideshow?searchfrom=header&q=rope