Pack up to three times more in suitcases and carry-ons with our ingenious 5-Piece Travel Deluxe compression bag set. Just place garments inside... zip bag closed... then roll or press using our patented one-way valve to dramatically compress contents. You’ll save space, time and extra luggage charges. Also increases the capacity of your carry-on and backpack. Made from polyethylene and nylon lamination that is airtight, waterproof and reusable. Set of five—two large 19½" x 28" bags and three medium 19" x 20" bags.