Zaltana Twin size Air Mattress with DC air pump (Opreated by 4 "D" cell battery) Air mattress: Soft plush top for luxurious comfort one way large Valve:Fast inflation and fast deflation Aircoil support adjustable firmness Size: 73"x38"x7.5"; Suport up to 400Lb DC Pump: Opreated by 4 "D" cell battery; durable and fast