Instruct: Classify Amazon reviews into positive or negative sentiment
Query: DON'T WASTE YOUR MONEY

PURCHASED THIS 5.5 DENSITY FOAM MATTRESS TOPPER FOR PAINFUL BACK, THE TOPPER ARRIVED AND WEIGHED 15 LBS. COULDN'T BE 5.5 DENSITY FOR A KING SIZE MATTRESS TOPPER, THE CHEAPER ONES AT WAL MART WEIGH MORE THEN THIS, AND IT IS 3" TOO SHORT FOR THE KING SIZE BED, PREVIOUSLY HAD ONE BOUGHT FROM JCPENNEY, THOUGHT I WAS GETTING A MORE QUALITY FOAM MATTRESS TOPPER BY THE AD WRITTEN ON AMAZON BY SELLER, THE COMFORT LEVEL IS NOT ANY BETTER THEN THE CHEAPER ONE PURCHASED FROM JCPENNEY.THE COVER IS A JOKE, NO SUCH THING.