The Nautilus with Hood Overbag is a summer weight sleeping bag by itself. It is designed to be used as an overbag in the FTRSS system with any of the Hunter with Hood (rectangular) style core bags. When combined, the Nautilus Overbag will help drop the temperature rating of the combined bags by approximately 40° F. Being a true rectangular bag, it measures in at 92" x 36". The Nautilus Overbag is equiped with a second row of zippers for securing your core bag when used in the FTRSS.
This bag also comes with a choice of three zippers; all zippers are made from a molded tooth LenZip zipper. When mated, the bags can then be used for couples camping, or if in an emergency situation, for shared body heat.
This bag has a 65" right hand Side Zipper. This allows one right-zip & one left-zip bag to be mated together in traditional fashion.