Mark Ryden 17.3 Inch Men Large Capacity Oxford Cloth Computer Backpack,Style:, Expansion Style, Raincoat Style Option:Expansion Style Ambient temperature: working -20 degrees

Ambient temperature: working -20 degrees ~ +55 degrees

Loading Container 20GP: 226 cartons * 10 pcs = 2260 pcs

shooting video etc

two power supply modes

Mark Ryden 17.3 Inch Men Large Capacity Oxford Cloth Computer Backpack,Style:, Expansion Style, Raincoat Style Option:Expansion Style Ambient temperature: working -20 degrees1. Expansion bag body, effective capacity expansion is 12. 98L, daily capacity is 26L, capacity expansion is 39L (normal model does not have this function) 2. Highly elastic honeycomb back pad, comfortable and breathable without squeezing the back 3. Water repellent fabric to prevent water from soaking items 4. Multi layer large space, can accommodate 5 7 days of travel clothes 5. External charging interface, the mobile phone can continue to use the