I do have a issue with the rope sliding through the handles as I'm jumping .

The quality of the jump rope itself is great. However, the instructions say to cut the wire to adjust the height for yourself. While it sounds like an easy task, I couldn't do it with scissors or an actual wire stripper/cutter. After I was finally able to, the rubber cap doesn't fit back on without the metal threads poking through and poking your hand.

Jump rope quality itself is great. Maybe too great that it's impossible to adjust the height cleanly/effectively.