Men Travel Backpack 17 inch vacuum compression Laptop Backpack Extended Large Capacity school Backpack Hiking Business backpack

This product requires manual compression of the bag to extract air, or you can configure a pump to operate it yourself. Thank youProduct Name: Vacuum Compression BackpackMaterial: Waterproof Oxford clothSize: 49*32*15CMAfter expansion: 49*32*20CMCapacity: 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 strapsstrapAnti-theft zipper pocket on the backWaterproof/wear-resistant/moistureproofWet and dry separation areavacuum compression airtightpasswordboardingLarge capacity = 24-inch luggage