Abstract: A device to prevent a user from sleeping on or rolling onto the abdomen during sleeping including a resilient foam cushion having a generally wedge-shaped cross-section. The cushion is formed with a base having length and a width sufficient to engage major portions of the user's abdomen and sternum. The cushion further has two converging sides extending from the base, the elevation of the sides being between about 0.5 and 1.5 times the width of the base. A belt is used to maintain the cushion in position on the user's abdomen and sternum during sleeping. The belt extends from the cushion and is arranged to engage the torso of the user.