Air mattresses 1,Micor-ventilation 2,CPR rapid deflate function. 3,Low pressure alarm. 4,Lying function. 1,Adjustable flexible/rigid mattress.2,Adjustable wave cycle.3,Micor-ventilation4,CPR rapid deflate function.5,Low pressure alarm.6,Lying function.7,Mattress is made of waterproof&breathable material for easy cleaning. Air mattresses (DL00-024)