Product review (5 stars): A lot better than what I got at Lowes!
I bought a heavy-duty dryer duct at lowes that had a screw clasp and it was a big pain!  It kept popping off the back once I pushed it back and then broke in half, it was stainless steel and broke in half!  This little guy, on the other hand, is waaay more flexible which is great if you don't have a lot of space behind your dryer.  I have maybe 5-6 inches to spare behind it and the dryer duct didn't break at all.  Even better, the clasps are the EASIEST thing I have seen to attach this with.  Just pull apart and let go.  This vent is also the kind my contractor told me about after I paid more money for the one I thought would be better.