Instruct: Classify the given review into positive or negative sentiment.
Query: You Don't Want These!

I purchased these because I love Birkenstocks, but when I received them, I was terribly disappointed! The piece between the toes is not the nubuck material, but is a very hard plastic piece that was quite uncomfortable. I did not see any hope for them softening up, and promptly sent them back to the company! The company was great about the return!