Thank you for viewing. This is the Patagonia Atom Sling body bag. Reference site (the item for sale is from about 10 years ago and is not the current model) https://camphack.nap-camp.com/3849 I haven't used it for the past five years because I've been carrying less and using a sacoche bag, but it's still in good working condition. The zippers are smooth, but there are some signs of wear and tear in places. Please consider it as being in the same condition as a B-grade item you might find at a recycle shop. Thank you.