a leather backpack

This large transport bag has a convenient flap closure styled for security as much as for the wearer to gain easy access to the wide opening. Two broad straps are sewn to the supple leather bag, enabling it to be slung across both shoulders, thus freeing up the hands.

It is a leather backpack.
It weighs four pounds.

You identify a leather backpack.
It is a closeable container.
It weighs four pounds, and it is worth about one silver.
Its keywords are backpack and pack.