Synthetic Fiber ClothMaterial--4PCS packing cubes Made of breathable mesh cloth and soft smooth nylon fabric, practical and visible so that you can view your belongings inside without opening the cases. All packing cubes also include a quick grab function for easy access to the packed cubes from a suitcase or backpack.Features & Details--The compression cubes have double zippers so that clothes can be easily compressed, minimizing the amount of space occupied in your carry-on or checked luggage. These zippered organizers can save an additional 30%-40% of space, allowing you to reduce the size of your carry-on bag and pack more items in it.Multifunctional Packing Cubes--Easily compartmentalize your travel accessories and travel gear. Place cubes in a drawer or cabinet, conveniently categories your daily storage. Can be zippered when not in use, easy to store.Works great as a backpack organizer, suitcase organizer, or luggage organizer.