It works!  Non-kink oxygen tubing.
People who depend on portable oxygen will know how difficult it can be to find tubing which does not "kink"--tangling in on itself, blocking the air-flow, and really becoming a nuisance.  The manufacturers of this product describe it as "non-kink" and they tell the truth.  It is refreshing to find tubing which behaves itself, even when extended to the maximum medically recommended length of 50'.  When, after a while, it does begin to tangle, it's time to turn to new tubing anyway.  I was skeptical when ordering this,  but it really does work.
Rating: 5 stars