It is a dead stock of carry bags that were used to carry U.S. military medical kits (medical equipment) in the late 60's.
It is a popular item less released from the U.S. military.
Handle part and strap makes you feel the bonelessness that seems to be military thing from both practicality and design.
The wide open opening is very easy to use, with plenty of capacity, and recommended for everyday use.
Size: 38cm x 34cm x 27cm
※ Please forgive some errors
Capacity: about 35l