The Travel Space BagÂ® packing system is the ultimate companion to the Pack-ItÂ® System from Eagle CreekÂ®. They complement each other perfectly! Where the Pack-ItÂ® system excels at packing standard garments and keeps them neat and wrinkle-free, the Travel Space BagÂ® products are the solution for compactly packing and transporting bulky garments like sweaters and knits, and fiber-filled coats, as well as accouterments such as towels and pillows. It also makes perfect sense to take the Travel Space BagsÂ® along completely empty to transport wet or dirty clothes, linens, or towels without making a mess of your other clothes, accessories and luggage. The secret is a one way valve in the end of each bag. Directions on proper folding of the garment are printed on the bag itself so they can’t be lost or forgotten.