The MDXONE is a tether that combines

A kids backpack for your young student & a retractable leash for the instructor.


The MDX-Leash has a 16 feet retractable red tape/cord with two 12” bungee cords at the end to connect into the MDX-Bpak attachment points.

  • With the retractable leash, you can now decide the distance between you and your student with a simple push on the stop/release button with your thumb.
  • When hitting the stop button, the bungee cord will extend slowly which will not cause a jarring effect on the student.


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  • The MDX-Bpak is a small backpack (10”H x 9”W x 2”D)
  • Optional/removable seat harness for extra support, especially for the little ones
  • Three attaching points for the MDX-Leash.
  • Chest and waist adjustable straps
  • removable “seat” harness which gives more support
  • You’ll also like the two grab handles.