HOW TO MAKE THE COMPRESSION HAPPEN?
There is a extra zipper outside of our compression packing cubes which can be zipped up to flatten the cubes and save the space as far as possible. it just works like a vacuum sealer. You just need to:
(1) Fold your clothes and quilt, and flatten them
(3) Put a finger on the back of the zipper in the space when compressing the packing cubes in case the zipper get stuck in fabric.
(2) Pack clothes in the cubes and zip the normal zipper.