Remove the plastic cap that sits over the air release valve by turning the cap counterclockwise until it comes off, exposing the release valve.
Remove the cap from the end of the hand-held pump.
Place the opening on the hand-held pump over the opening on the release valve and turn it until the pump and the release valve lock together.
Pump the lever on the end of the pump with one hand. As you pump, air will flow into the mattress. Continue pumping the lever until the mattress feels full.
Lay on the mattress to check its firmness. If the bed is too soft, add additional air.
Turn the pump counterclockwise to break the lock between the mattress and the pump. Pull the pump off the valve and replace the cap onto the opening of the air release valve.