Large Capacity Short Trip Computer Luggage Bag Vacuum Compression Expandable Men Double Shoulder Bag 1. Fabric: oxford cloth 2. Expandable backpack design, can be expanded to the equivalent of 24-inch luggage capacity, to meet the daily needs of commuting to work, travel, business trip 3. Multi-functional design, wet and dry separation zone, vacuum compression airtight bag, customs code lock, compartment storage more scientific 4. Fast exhaust, from the pneumatic principle design of the one-way valve chamber, without pumping easy to press to exhaust, quickly complete the compression process 5. Comfortable and breathable honeycomb back cushion promotes the free flow of air and keeps your back comfortable, breathable and dry 6. Comfortable sponge straps design, effectively reduce the pressure on the shoulders, easy to travel 7. Waterproof and wear-resistant, lightweight and moisture-resistant, wet and dry in one wipe 8. Customs code lock design, better protection of the contents of the bag, travel with peace of mind 9. Comfortable handle, handheld more easily 10. Adopt SBS zipper, durable 11. Side expansion pockets, can be put into the water cup, umbrella, etc 12. Size: about 49 x 32 x 15cm