0 In a magnetic information storage device of the type having a slider which moves relative to a magnetic recording medium such as a disk, the slider has a non-rectangularly shaped air bearing surface that provides the slider with a high degree of stability. The non-rectangular shape is preferably either a triangle or a trapezium. The non-rectangularly shaped slider includes a tapered leading edge and a flat vertical surface as its trailing edge. A conventional thin film head element can be deposited on the vertical surface, if the slider is fabricated from ceramic material, or a conventional head element having a wound coil can be disposed on the vertical surface, if the slider is fabricated from ferrite material.