Instruct: Classify the given Amazon review into positive or negative sentiment.
Query: Works just fine

I've used this mattress several times now, both while camping and visiting other people's houses. I haven't had any trouble with leaks like I did with a previous more expensive brand. I like the wrap n roll storage too. The pump does seem a bit flimsy, but it's still working fine, and deflates it quickly too. Be sure to push in the valve all the way. I'm considering getting one for my daughter for a guest bed. I've found it to be very comfortable too. As with any air mattress, you just need to find the right amount of air.