Product review (5 stars): Worked for what i needed it to do.
I purchased this to extend a home made air conditioning unit to keep my toddler cool in the car, it is very flexible and works as i need it to.  The only issue is that it smells pretty bad right out of the package, almost nauseating but over time it dissipates.  I used it for an unconventional reason.  It specifically says NOT to be used as an exhaust hose.  Please make not of this.