Product review (5 stars): Much easier than traditional Semi-Rigid Meatal vent hoses.
I have a basement level high efficiency gas dryer, which means the hose connection is recessed under the back of the dryer which eliminates most of the sliding snorkel kits on the market and the plain old rigid tubing is a pain to clamp in place, as soon as I get one end mounted the other end always seems to twist/fall off.

The beauty of this system is the plastic ends, you thread them on each side. HINT:  This is best done before you expand the tube so it remains rigid and doesn't deform.  Once on carefully extend the tube so as not to pull off the ends and the insert the ends into the vents on your wall and drier.  I find a bit of persuasion with a small mallet applied to the plastic shield after gentle twisting in will ensure a tight fit, then secure with high thermal tape and your good to go until you need to remove it for cleaning.  This is particularly useful if you are attaching to a vertical connector in a ceiling or right angle bend so it doesn't keep falling on your head like the cheap ones do no matter how tightly I used to screw those clamps on to hold it, this works MUCH better!

Overall much easier, and the ends can be reused several times with the less expensive normal rigid duct-work which I find easier to just replace the duct than try to clean or vacuum.  The price listed is cheaper than what I originally paid for the first one I bough a few years ago for the same product at the local home store.