Product review (5 stars): Works perfectly, but you must be gentle.
It is just what you see.  If you don't know the difference between semi-rigid vent hose and vinyl you should probably avoid the semi-rigid, it is a little tougher to work with.  For me it worked perfect, you have to handle it very gently, or it will separate at the seams an will dent.  The elbow connector fit snugly on the dryer that no clamp was needed, the hose itself was a good snug fit, I duct taped it to insure a good seal.  No complaints I would recommend this.