Introduced in 1938, the approximately 33cm x 29cm x 6.5cm, khaki-colored canvas knapsack features a top fold-over flap and a harness arrangement to the reverse comprised of two shoulder straps proceeding from each side of the upper back, and two narrower straps proceeding from each side of the lower back. To the ends of each of the shoulder straps, both of which have reinforced stitching, are sewn tabs with two brown-painted metal rings to them. The narrower straps to the base also have reinforced stitching to them, and even narrower straps sewn to their ends which pass through and adjust on the shoulder strap rings. Two long, narrow straps that would normally be alongside each of the shoulder straps are missing.. A narrow strap is sewn to the center of the upper back. Kanji markings can be seen under the flap with hand stitch kanji. Shows moderate/heavy usage and wear.