A Femto slider has three distinct areas with complex shapes designed to achieve a consistent head-todisk floating height across the disk as well as minimal height loss under high-altitude (low-pressure) conditions. The shallow etch area creates a stepped air inlet allowing airflow to create a positive pressure under the air-bearing surface that lifts the slider away from the disk. The deep etch area creates an opposite negative pressure pocket that simultaneously pulls the slider closer to the disk surface.