Color: Black - Vacuum version without air pump, Grey - Vacuum version without air pump, Black - Vacuum version with air pump, 

Grey - Vacuum version with air pump, Black - No vacuum function, Grey - No vacuum function, Blue - No vacuum function

Applicable scenario: Business travel

Material: Oxford cloth

Cortical features: Oxford

Capacity: 36-55L

Function: Expansion

Computer size: 15 inches

Pattern: Solid color

Material texture: Polyester

Popular element: car stitching

Carrying System: Curved Shoulder Strap