At the time this was quite a cutting edge design. See their website for complete information about this sleeping bag: google Stephenson’s Warmlite. They are still being made. This bag measures 56 in. In girth, and 76 in. And it still fits great- in 1976 I weighed about 175lbs. Today about 205 lbs- getting old sucks. Used in late 1970′s through late 1980′s backpacking. Has been stored in multiple burlap bags, and then the past couple of years in a large cotton laundry type bag in a walk in closet. Still in great shape. There are some mildew stains on the bottom; see picture 7. All zippers work great. It has an integral foam pad. Warmlite still makes a down filled mattress which was an option at the time- which would make the bag lighter and smaller to pack. It just weighed in at 7.5 lbs. The nylon is vapor barrier, meaning waterproof coating- the inside silver lining is a little stiff, but still smooth. Stuff bag shows some miles, but is still sound. This bag was a real comfort when trapped in a whiteout at Edmonds Col in the White Mtn. S of New Hampshire in 1979. Study pictures, ask questions. The item “Vintage prime goose down sleeping bag- Stephenson’s Warmlite” is in sale since Friday, June 05, 2015. This item is in the category “Sporting Goods\Outdoor Sports\Camping & Hiking\Sleeping Gear\Sleeping Bags”. The seller is “56star56″ and is located in Ann Arbor, Michigan. This item can be shipped to United States, to Canada, to United Kingdom, DK, RO, SK, BG, CZ, FI, HU, LV, LT, MT, EE, to Australia, GR, PT, CY, SI, to Japan, to China, SE, KR, ID, to Taiwan, TH, to Belgium, to France, to Hong Kong, to Ireland, to Netherlands, PL, to Spain, to Italy, to Germany, to Austria, RU, IL, to Mexico, to New Zealand, PH, SG, to Switzerland, NO, SA, UA, AE, QA, KW, BH, HR, MY, CL, CO, CR, DO, PA, TT, GT, SV, HN, JM.