Its pros: 1. It sticks to glass! It really lasts in winter and summer. Extended to full length. 2. Conveniently adjustable due to the length. Cons below: it's not even a flaw - just a statement. The first one broke in about 1.5 years - the design of the suction cup fastener to the plastic broke. But 1.5 years of impeccable service - I think it's cool.