Thanks To An Expansion Zipper That Increases The Dimensions Of The Pack-it® Reveal Expansion Cube On Demand, Travelers Get Two Packing Cubes In One. The Durable Compression Zipper Shrinks Bulky Garments (Or Additional Clothing Purchased While Traveling) Into A Structured Parcel That Frees Up Luggage Space. And The Water-resistant, 100% Recycled Fabric Includes See-through Mesh On One Side To Make Items Easy To Spot.