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 you

Product Name: Vacuum Compression Backpack
Material: Waterproof Oxford cloth
Size: 49*32*15CM
After expansion: 49*32*20CM
Capacity: can hold a 17-inch laptop
Separate laptop bag
Using the vacuum compression method:
1. Open the compressed vacuum lined bag
2, put the clothes on the air-tight zipper
3. Open the one-way exhaust valve
4. Press to exhaust the air inside
Function:
Breathable back
Comfortable foam shoulder straps
strap
Anti-theft zipper pocket on the back
Waterproof/wear-resistant/moistureproof
Wet and dry separation area
vacuum compression airtight
password
boarding
Large capacity = 24-inch luggage