Product review (4 stars): It really works
Our dryer vent did not align with the vent outlet in the wall.  And, there was insufficient room to move the dryer to get them to align.  When we used the flexible conduit it had to fold over itself which left the dryer over a foot from the wall.  I purchased this and had a handyman install it.  Now, the dryer is less than 6 inches from the wall.  Removed one star for the handyman's profanity during the installation, and his declaration that he would never install another one.