Description: A short recording of a modern synthetic backpack.

Description: A short recording of a clothing zipper.

Description: A short recording of a clothing zipper.

Description: A short recording of a clothing zipper.

Description: A short recording of a clothing zipper.

Description: A short recording of a clothing zipper.

Description: A short recording of a modern synthetic backpack.

Description: A short recording of a clothing zipper.

Description: A short recording of a clothing zipper.

Description: using a zipper, open and close