Instruct: Classify an Amazon review into positive or negative sentiment.
Query: don't buy unless you want to fill it every two hours

The first one I bought sprung a leak on the second usage simply by deflating it and rolling it up. Back it went. The second one gotten in the return has done the same thing, starting on the second usage and springing a leak with every roll up--I don't even roll it up any more due to this and it still springs leaks in the sidewalls constantly. I have never been more frustrated with an air mattress. Lost the original receipt so I have lost my $45. Don't buy this one. While the battery option is great and it fits in my van great, my eddie bauer one has never sprung a leak.