Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Breakdown

Within the first couple of months, the materials started to separate on the heal of the left boot. Now that they are about 7 months old, they are all but shot. They have been used for simple chores and only once made it to the wash rack before they started leaking. While they garnered a great amount of amusement, they are not comfortable for the flat-footed individual and the shape does not allow for insole inserts. Cute but not very functional.