Given reviews from Amazon, classify those review based on their content into two classes: Negative or Positive.
--------
Question: With the type of closures and the amount of compression it is meant to give it's really difficult to put on. You need a hand to pull it closed in order to actually be able to close each of the 20 some odd hooks.

Answer: Negative

Question: I bought this air mattress to use while my new bed was being shipped from back east, the bed lost air every night and I woke up almost on the floor. I tried to send it back but it was impossible to get back into the box.

Answer: Negative

Question: Before you buy this thing, understand one thing. When you mark a song, you have to remember the station you were listening to at that time. So if you have 10 emarks, you have to remember the station you were listening to at the time of each of the emarks. I wondered about this detail before I bought the thing and found no mention of it anywhere on their website. I assumed it would mark the station somehow. My mistake. Learn from it.

Answer:
Negative