Have the air mattress purchased and am very satisfied! Within less than 3 minutes, the bed is inflated by the built-in air pump. Without sweat and work, simply push plug into the socket and ON! Also, the deflation is automatic! Here at me a little residual air remains in the mattress and therefore it is a little thicker than expected after the folding and just fits into the included bag. -> One star deduction The sleeping comfort is excellent. One meter wide and two meters long are optimal. The height of just 50 cm allows even older guests comfortable to go to bed and get up again. Grandma is excited! Definitely a buy recommendation from me!