Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Does Not Work Well

I purchased the item due to the comments, yet when using while traveling it was too stiff and I ended up using a towel rolled up instead. The free towel was much more effective. When returning the item, it would cost me $6 for a $12 item, yet I believe that it was not effective as advertised. Use a towel, you will be much happier than dealing with the vendor !