The vacuum travel backpack has a built-in vacuum system that allows you to use our electric vacuum pump to inflate or compress clothing and other items, improving space utilization in your luggage. Ideal for flights, short trips or everyday use. This travel backpack is carefully designed with multiple compartments and pockets to organize your belongings efficiently. The main compartment easily holds 10-15 pieces of clothing, perfect for short and long trips. A wet pocket for separate storage of wet items; the computer compartment can hold up to a 15.6-inch laptop;. It has multiple built-in multifunctional pockets for excellent storage. There is also a hidden anti-theft zippered pocket on the back for added security. This air backpack features a multi-panel airflow design with a 3D back pad, breathable adjustable shoulder straps, and a waist belt lining to reduce shoulder and back strainThe vacuum travel backpack also comes with trolley straps to attach it to your luggage for a more convenient travel experience. Specifications Size:47*33*20CM/18.5*13*7.9". Weight:1.64KG/2.42LB How to use compression? 1.Place the clothes in an airtight bag. 2.Close the zipper.Hold the bucklewith one hand and use your otherhand to pull the zipper open. 3.Open the exhaust valve. 4.Align exhaust valve toexhaust air.Press hardto align the air valve. 5.Close the exhaust valve. Ensure that the zipper is tightened to avoid air leakage.