Jumprope institute
Jumprope institute
http://www.jumpropeinstitute.com/
Rope Masters
Jump rope masters - demonstrations and instructional materials by 7-time world champion, peter nestler.
http://www.jumprm.com/index.html
RS reference
Reference.com free online encyclopedia article for double dutch, powered by wikipedia
http://www.reference.com/browse/wiki/double_dutch
Touw met ingebouwde teller
Skippcomp is a new generation jump rope with a brain. it contains a microprocessor that registers all movements automatically.
http://www.skippcomp.com/
Wikipedia Rope Skipping
Wikipedia Rope Skipping
http://nl.wikipedia.org/wiki/rope_skipping