The MediCordz Adjustable Door Strap Kit lets you take your rehab workouts on the road with this portable and adjustable system.áKit includes a nylon strap that wraps around the door, providing an anchoring point for other products.áIt is ideal for both clinic or home use. The MediCordz Adjustable Door Strap Kit includes door mount strap with adjustable rings and mounting hardware, two 3ft/90cm modular tubes, ankle strap and two handles. Available in ten resistance levels. One resistance level per kit. The Tan resistance has 1 - 2.3 lbs of resistance.