Friendly Notice: When using expanding zipper, the inner clothing may be clamped by zip. If so, please stop going, but pull the zip back slowly and push the clothing out at the same time. Soap-suds will be useful in lubrication. How to Compress It? 1. Fold your clothes and stack the neatly; 2. Load your items into the cube, zip the normal zipper; 3. Use the exterior zippers to flatten and compact the cube. Washing Instructions: To make the packing cubes last longer, it is highly recommended to wash them by hand with warm water and mild detergent, and then hang the to air dry. Also it can be machine washed, please use the gentle mode, then hang the packing cubes to air dry. Do not put them into the dryer with high temperature. Water-Resistant These packing cubes are made from waterproof nylon fabric, which are also tearing-resistance and dirt-bearing, protecting your clothes all the time. Wonderful Travel Companion The size of the packing cubes is perfectly fits for luggage. For a 24 inch luggage, you could put a XL packing cube on one side and choose any other 2 packing bags on the other size. Neat Home Storage Organizer The Packing cubes are also could be a clothes storage bag for your closet. The compression packing cube is a great choice for storing your seasonal clothes and keeping your home organized and neat. Space-Saving for Backpack With compression zipper, the packing cube could save extra 60% space when zip up, fitting better in suitcase and backpack. You could bring more clothes and items for your travel.