Abstract: An adaptor pad is devised for use with sleeping bags, particularly those commonly referred to as mummy bags, in which the mummy bag can be unfolded and the zipper edges wrapped or folded over the opposite side edges of the adaptor pad and removably secured to zipper sections at or beneath the side edges of the adaptor pad. The pad is so constructed and arranged as to permit its use either with a single or double panel portion of a sleeping bag to provide sleeping accommodations for one or two persons, respectively.