This is a full size back pack that folds into itself.  The back pack  has a large zippered main compartment with two   compartments on the bottom with a slip  in pocket between the the cargo compartments.  It also has adjustable shoulder strips with a carry on handle. All of this folds into the bottom of the bag  and zips up making it only  7 inches by 11 inches.  This was purchased at the Abraham Lincoln Presidential Library and Museum in Springfield Illinois.  This is great to carry in your suitcase and you have a nice size extra bag if needed. It is new and has never been used.