6-Piece Compression Packing Cubes for Travel Expandable Packing Organizers Used once. I LOVE these and have two sets. I am selling because I only need one set There Is an 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 Flatten Them 2)Pack Clothes In The Cubes And Zip The Normal Zipper. 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. Nylon Fabric Protects Your Clothes from Wrinkles and Stains.High Performance Feature Makes Sure this Packing Cubes can Bear High Density Wear and Tear during Traveling.Water-Repellent Feature Nicely Protect Your Clothes from Spill or Leaks Super Light Nylon Fabric and Considerate Designed Construction Ensures Storing Your Clothes Neatly in Luggage without Adding Extra Weight.Premium Sturdy&Smooth Double Way Zipper with Extended Cord Ensure Fast&Easy Opening and Closing of the Packing Cubes. Different Sizes Packing Cubes for Different Packing Purposes.Separating Your Clothes,Such as Jackets,Sweaters,Underwears,Socks into Different Packing Cubes for Easy Access. This Set Of Packing Cubes Includes One Xl(17.5 Inx12.75x4in),One L Size(13.75" X 12.75" X 4"),One M Size(13.75x9.75x4), One S Size(11" X 6.75" X 4"),One Slim Bag(13.75x5x4in) And One Shoe Bag(17x4.5x10.2in)