Improved bag design. There are two airtight vents at the bottom of the bag. If you drop the bag, the air will be expelled. Once rolled, air will not enter the bag under vacuum, but will remain sealed. The travel bag is made of high-quality tear-resistant plastic (PA/PE),reusable. Compression bags protect the fabric from water, dust, mold, bacteria and mites. The Hand Roll, No Vacuum Cleaner Travel Bag is a ready-to-use device with a child's vacuum cleaner. Please open the bag, close your clothes carefully, and let it roll into the enclosed area until the air at the end of the bag escapes. With this empty bag, everything in the pseudonym is very stable, and no part of the clothes has been looted. Our travel bag under the ball valve seals wet items to protect clean and unused clothing. No need for a separate travel bag. Thanks to the travel bag, luggage is still organized.Practical and take up a lot of spaceThanks to our travel compression bags, you can pack your clothes at a very good price, keep a lot of things in suitcases, backpacks, cabinets and layer bags, which can be sealed for storage and cleaning. [EASY TO USE] Our travel vacuum bags do not require an air pump. Please put the clothes in the bag first, zip it up, then slowly roll up the travel bag (note: put the clothes in the bag evenly, don't block anything, it will be easier)Absolute WaterproofDue to the unique and innovative design, when the empty travel bag is wrapped, the air is discharged through the lower opening, and the internal and external pressures reach a balanced state, without releasing external force. , keep the air and drive off.[Size] 35*50cm-10 pieces