Material: Waterproof Oxford
Color: Black,
Size for backpack : 30*16*46 cm /11.81*6.3*18.11 inch
Size for chest bag : 15*5*18cm
Net weight：backpack=0.9kg ; chest bag=0.35kg
Product feature: Large Capacity ,More pocket, Light weight,Waterproof fabric, with Headphone hole
Capacity : wallet, cell phone, notebook, umbrella, Thermos cup,etc.
Features:
1. The three styles can be freely converted.
2. It can be expanded to 28L, which is equivalent to a suitcase.
3.Compatible design, can be used in combination with another small bag.
4.High quality backpack with oxford materials.
5. Anti-Theft & Waterproof & Resistant & Anti-plash &Durable.
6. Unique layerfor 15.6 inch laptop and large capacity for storage.
7. Comfortable feeling and burden reduction.
8.Expansion style Prevent backpack deformation.
9. Double buckle super anti-theft.
10.Sales gurantee:Fast shipping within1-3days & Quality Assurance
11.Professional inspection before shipment.
12.We have our own factory so dropshipping and large order can be handled quickly.
