This is the Nanga Swell Bag 180DX. I've used it for camping a few times, but haven't used it at all in recent years, so I'm putting it up for sale. There's no major visible damage, but due to aging, there are some areas, such as around the seams, where the down filling can be pulled out if you pinch and pull it. Made in Japan, outer and inner fabric are 100% nylon, filling is 80% down, 20% feather. It should be fine for normal use, but I'm listing it as being in generally poor condition, so please examine the images and understand the condition before bidding. It might be a good idea to keep it at home as a precaution against disasters like the Nankai Trough megaquake.