Instruct: Classify Amazon reviews into positive or negative sentiment
Query: the best shoes in the world!

this shoe is wonderfully comfortable! it is like walking on a mattress. your feet never get tired, even with my permanently injured ankle, i can walk all day. since my injury these are the only shoes i can wear. if you normally wear a wide width, order a medium width because they run wider. the heel height is just right, not too low, not too high. i am sure you will love this shoe!