Wow what a deal at $7.95! I bought this for tent camping on our kayak trips. This air mattress sure beats sleeping on a pad. I read a lot of the posted reviews, pros and cons before I bought. Keeping that in mind I followed the instructions to pre-inflate the mattress before use to let the material stretch. I let it set in my garage for a few days then packed it for our trip. Our first camp trip was a 4 nighter. I never had to add air and it was so much more comfortable than the pad I had used before. The next 3 trips were 3 to 5 night trips and again I never had to add air. We're getting ready for a kayak float trip on the Dismal River in Nebraska then a week up in the Boundary Waters on Moose Lake. I just got the Intex hand pump to try instead of the 12 volt one I use now. This is needed when I don't have a vehicle close by for power. Bottom line, I really enjoy the comfort sleeping on this mattress and recommend it to all of you out there. Have fun and enjoy life, Brian from Kansas City, KS.