In one set you'll get four cubes of varying size to accommodate different items!
Promising review: "I am officially sold on packing cubes!! These things are amazing! I can believe I've been packing without them my whole life. The mesh lining allows you to peek inside, and I was able to pack all my clothes, shoes, and toiletries for a 10-day trip to Europe (full contents listed below). I packed them as I normally would first, and then packed them in the packing cubes. There was SO much more room in my luggage after packing everything in the cubes! Items I fit in the cubes and bag include two jackets, one jean vest, four pants/capris, two pairs of shorts, one romper, four dresses, one maxi skirt, seven tank tops, four shirts, three camisoles, three pajama sets, 15 undies, six pairs of socks, and four pairs of shoes. But why are you still reading?? Go buy these cubes!" —Tiffany
Get them from Amazon for $10.99 (for a pack of five, available in nine colors).