Instruct: Classify Amazon reviews into positive or negative sentiment
Query: defective seat

the surface of seat has two creases which are indicativeof a potential crack about to occur.I have experiencedthis on a previously owned Kohler toilet seat whichcracked after about 8 years without a warning. We are afamily of 2 adults weighing 140 and 205 pounds not exactly heavyweights.I would like to return it for adifferent brand or style.