I'm guessing outside and inside are a shell nylon. There is a quick repair at top of zipper which I vaguely remember doing as a teenager?? Also some staining on carry bag.Tag has also been cut off but can make out JC and part of their logo. Please see photos for condition. This item is in the category "Sporting Goods\Camping & Hiking\Outdoor Sleeping Gear\Sleeping Bags". The seller is "antiquesmorgans" and is located in this country: US. This item can be shipped worldwide.