Altitude insensitive air bearing slider

An air bearing slider having an air bearing surface, a leading end and a trailing end and first and second parallel sides between said leading and trailing ends comprising:

• a taper formed at the leading end;
• a rail extending from said taper towards the trailing end, said rail being formed in the general shape of the numeral "7", with a base and first and second legs;
• said first leg being shorter than said second leg, said first leg extending partially from said base toward the trailing end;
• said second leg extending from said base to the trailing end, said second leg configured with at least one polygon-shaped section;
• and
• inner and outer recesses defined and separated by said rail;
• whereby said slider is effectively insensitive to changes in ambient pressure and to variations in altitude, so that a substantially constant flying height of said slider can be maintained.