The MegaLite is cut to suit large folks so they too can enjoy the benefits of the ExtremeLite bags. No claustrophobia here with 64? of shoulder girth tapering to 39? at the foot. 12 ounces of goose down provides a temperature rating of 30?, and continuous baffles allow you to adjust the fill to suit your needs. At only 1 lb. 8 oz. this is your best friend during a summer bike trip.