Travel Vacuum Storage Bags Our service: If you have any questions, please contact me first and I will provide you with the best service! Save up to 60% space It varies depending on the space compressed by different storage items.Help you save more storage space IP67 WATERPROOF PROTECTION DIFFERENT WAYS TO STORE AND CARRY Reduce luggage space by 60% 17L vacuum bags fit backpacks over 25L or luggage larger than 20 inches (Larger or smaller depending on items) How to work about the air pump 1:Double click to open,when the pump is working,once click to close. 2:Select only one suitable nozzle each time. 3:lnflate: The inflation interface is on the side of the air pump. 4:Deflate:The deflate interface is at the top of the air extraction pump. 5:when the red light is on,it indicates the battery less than 5%,should be charged in time. NOTICE!!!:The RBR IP67 airtight zipper is designed to be very tight to ensure the sealing effect.so it will take extra effort to use it,to prevent air leakage, please make sure to pull the zipper tightly! How to use 1.Put items in storage bag. 2.Zip the bag with force 3.Open the vent and vacuum air for best compression effect 4.Press manually to exhaust if the air pump is not nearby. This bag is suitable for various scenarios