Instruct: Classify Amazon reviews into positive or negative sentiment
Query: HORRIBLE!!!!!!!!!!!!

The right shoe does not wear well at all, I feel there might be a problem with the strap, I developed a blister on my toe which started within thirty minutes of wearing ( I had to purchase a pair of flip flops to change because of the horrible pain) the left shoe is fine but because of the problem with the right I am unable to wear them. I am updating this review I bought this product last year and received horrible blisters, I tried again this year and the same thing. As of this writing the seller has not made ANY attempt to contact me.