The OSKA Series 4 is an innovative pumpless air mattress that is suitable as an aid in the prevention and treatment of pressure damage up to and including category 3. The pressure relieving foam topper helps reduce shear, providing the patient with immersive support and comfort. The Series4-V3 contains more than 800 independent articulating foam cells that redistribute pressure, whilst also reducing heat and skin moisture. Air cells react instantly when the patient is repositioned, to equalise the pressure areas.