Abstract: A portable patient torso support and rotating system mattress overlay having a base sheet sized to fit under a patient with means to secure it to the support surface of a mattress, and two side by side pairs of inflatable and deflatable bladders attached to the base sheet and sized and positioned to fit under each side of the torso of a patient lying thereon and structured, when fully inflated, to rotate the patient up to 90 degrees to turn on their hip.