Abstract: A device to be worn on a user's head is provided for promoting back sleeping. The device includes first and second stabilizers that have a head engaging surface and a bulge portion that extends outwardly from the head engaging surface, such as in the shape of a triangular prism. The first and second stabilizers are supported by a connecting member, such as a band that is worn around the user's head. When in use, the user is able to lie on his or her back on a sleep surface, such that the first and second stabilizers are positioned on opposite sides of the user's head. In this way, lateral movement of the user's head is limited to encourage back sleeping and avoid or minimize the pressure that may otherwise be applied to certain areas of the face, such that the occurrence of sleep wrinkles can be reduced.