Experience the ultimate travel convenience with our vacuum compression backpack. Say goodbye to packing struggles as this backpack offers serious volume without the need for checking baggage, perfect for frequent flyers and travellers alike, ideal for daily commutes or business trips.With multiple storage compartments including a wet/dry separation zone, vacuum-sealed compartment, and TSA-approved lock. Save Money Every Time You Travel Designed to fit 5x more than a regular backpack.✅Replace your checked bag✅Skip baggage fees✅skip baggage claim✅Travel stress free Vacuum Compression: This vac pack backpack uses vacuum compression design, which can save a lot of space to store more items. You can release the air manually or use a vacuum pump to quickly compress it to maximize your packing efficiency. Air backpack use an airtight zipper, which adds a TPU rubber layer to the traditional zipper, so it cannot be opened like a normal zipper. You should hold the buckle with one hand and open the zipper with the other hand, which will make it easier and smoother Expandable Airback Backpack: The daily size of vacuum travel backpack is 19.3in*12.6in*5.9in; the expanded size is 19.3in*12.6in*7.9in. Airback backpack with pump adopts an expansion design, and when fully expanded, it provides the same capacity as a 24-inch suitcase, providing you with enough space for all your necessities Anti-theft Lock Design: Airback backpack is equipped with a TSA-approved main compartment combination lock to ensure the safety of your belongings during travel, allowing you to travel with peace of mind and protect your valuables from theft. The password setting operation steps are also simple and easy to operate Multiple Compartments: This vacuum backpack is equipped with a spacious main compartment and multiple small compartments. The dedicated laptop compartment can hold a 17-inch laptop, and multiple small compartments can store daily necessities such as mobile phones, keys, books, passports, wallets, etc. The spacious main compartment can hold 10-20 pieces of clothing, which is perfect for short and long trips Multifunctional Air Pump: The multi-function air pump with different nozzles can handle both deflation and inflation tasks (ideal for swim rings, inflatable pillows, vacuum compression bags, inflatable beds, inflatable cushions, etc.) Additional Accessory: Experience ultimate convenience with our WackyPump"".This portable and efficient pump quickly and easily removes air from the backpack's vacuum compression bag, making packing even more effortless. Weighing just 110 g (3.88 oz) and measuring a compact4.95 cm x 4.95 cm x 7.25 cm (1.95 in x 1.95 in x 2.85 in), it's easy to carry and store - perfect for travel. Additional Accessory:Experience ultimate convenience with our WackyPump"".Thisportable and efficient pump quickly and easily removes air from thebackpack's vacuum compression bag, making packing even moreeffortless. Weighing just 110 g (3.88 oz) and measuring a compact4.95 cm x 4.95 cm x 7.25 cm (1.95 in x 1.95 in x 2.85 in), it's easyto carry and store - perfect for travel. FAQS What are the Dimensions? DimensionsInches: 19 x 13 x 6-8 (After expansion)Centimeters: 49 x 32 x 15-20 (After expansion) Airlines Carry-on limit:Inches: 22 x 14 x 9 ✅Centimeters: 56 x 45 x 25 ✅ How long does shipping take? Shipping is worldwide and is completely FREE. Due to very high demand Shipments take to 6 to 12 business days. What's it made out of? Main material: Waterproof Oxford cloth (Waterproof/wear-resistant/moistureproof). GRS certified, PFC free. Other materials: Nylon herringbone, Polyester, Neoprene Foams, Polyethylene Foams. Is the lock TSA approved? Yes! The main compartment features a TSA customs combination lock and a hidden zipper pocket on the back, ensuring a worry-free trip. A TSA lock means if they need to get in, they will have a key that will fit. Will I have issues bringing this on the plane? You won’t have any issues bringing our backpack on the plane. Our patented vacuum sealing technology in the backpack is fully compliant with TSA regulations and airline guidelines. It functions without any batteries or electrical components, making it safe for air travel. Plus, its compact and efficient design fits easily into overhead compartments or under the seat, ensuring a hassle-free travel experience. However, it is always best to check with the airlines.