A safety device for restraining a person includes a fabric bottom panel, at least two fabric top panels, at least two side separable fasteners, and a top separable fastener. The fabric bottom panel is dimensioned to extend lengthwise along an underside of a mattress. The fabric top panels extend approximately lengthwise along the fabric bottom panel. Each side fastener attaches one of the at least two fabric top panels with the fabric bottom panel. The top separable fastener attaches the at least two fabric top panels to one another.
