A sleeping bag extension panel (10) attaches to a sleeping bag (12) that contains a head end (20), a foot end (22), and a longitudinally disposed opening (24) that extends a portion of the longitudinal length of the sleeping bag, from the head end to a transitional connection point. The longitudinal...http://www.google.no/patents/US5960492?utm_source=gb-gplus-sharePatent US5960492 - Sleeping bag extension
