Men Travel Backpack One Click Start Pump Vacuum Compression Laptop Backpack Hiking Business 60L Extended Mountaineering Backpack

This product requires a portable power bank to be configured for use, which we do not provide. Thank youProduct Name: Vacuum Compression BackpackMaterial: Waterproof Oxford clothSize: 493215CMAfter expansion: 493220CMCapacity: can hold a 17-inch laptopSeparate laptop bagUsing the vacuum compression method:1. Open the compressed vacuum lined bag2, put the clothes on the air-tight zipper3. Open the one-way exhaust valve4. Press to exhaust the air insideFunction:Breathable backComfortable foam shoulder strapsstrapComes with built-in functions, one click compression function, no need to purchase a pump yourselfAnti-theft zipper pocket on the backWaterproof/wear-resistant/moistureproofWet and dry separation areavacuum compression airtightpasswordboardingLarge capacity = 24-inch luggageThe vacuum bag zipper is very easy to open and requires two hands to assist in opening. There is also an instruction manual inside, which is not a quality issue, but designed to prevent air leakage. Please be aware, thank you