The standard WWII German M31 haversack or “bread bag” for Luftwaffe / fallschirmjager service.
This is a mid war example, manufactured from blue water repellent canvas, with black leather and steel fittings. All the stitching is secure with one minor wear hole to the front and slight staining to the reverse from period usage.
A good example, harder to find than the standard green Heer model. It show light period use with minor wear, and overall very nice condition.