i inflated it the first day and didn’t sleep in it for 24hrs to let it stretch out,as expected it lost air.however,i started sleeping in it the second day and it kept losing air sinking in the middle where i slept at to the point it made my body ache.it doesn’t matter how many times you re-inflate it because it’ll indent the first time you sleep in it and you’ll just keep sinking further and further down into the bed everyday until eventually it stops holding air all together.i returned it within 2-3 weeks and got a refund but they charged me $27 to send it back.total scam