1. Material: EVA, lining texture: polyester\r\n2. Hard shell double shoulder straps\r\n3. Safety reflective strips\r\n4. Telescopic carry handle\r\n5. Three anti-theft combination lock\r\n6. USB external interface charging\r\n7. Waterproof, easy to clean\r\n8. Outer bag type: three-dimensional bag\r\n9. Anti-wrinkle and wear-resistant composite fabric\r\n10. Independent computer anti-vibration barrier\r\n11. 2 main warehouses with reasonable partitions\r\n12. Accommodating computer size: 15.6 inches\r\n13. Thickened metal frame, effective support and safety protection\r\n14. Three-dimensional air guide groove back, convection heat dissipation, back cushion cotton\r\n15. Function: breathable, waterproof, wear-resistant, anti-theft, shock-resistant, load-reducing\r\n16. Internal structure of the bag: zipper pocket, mobile phone pocket, document pocket, interlayer zipper pocket, computer insert pocket