Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Not very durable

I purchase several of these to get free shipping and I am glad I did. For some reason, they do not last very long. The rubber begins to tear after a couple of weeks of opening the door. In addition, I think they shrink a little. I cut it the exact width of the door but after a month or so, it has shrank about 3/8 of an inch. Now water comes in when it rains. I don't know what product I will try next but it will not be this one.