Specification: Luggage size: medium Capacity: 20-35L Inner structure of bag: zipper pocket, mobile phone pocket, interlayer zipper pocket, computer pocket, camera pocket Opening method: zipper Material: PU leather; p> With or without lock: no With or without rain cover: no Function: waterproof, wear resistant, USB charging Pattern: plain Lining texture: polyester Accessory types: Backpack shoulder protectors Main strap number: double root Carrier system: airbag strap dark grey Is there cotton back cushioning: yes Waterproof grade: waterproof Computer size: 15 Scene: Outdoor Humanized backpack design Add waterproof headphone socket and external USB charging port to enjoy music every time you go out, to prolong battery life Hidden USB charging port Prevent rainwater from sinking, causing leakage Waterproof headphone socket Enjoy every journey with music Luggage strap Hand backpack, which can be attached to the suitcase without carrying heavy loads Rainy days are not afraid of obstacles Made of waterproof and wear-resistant material, you can travel freely on rainy days without worrying about wetting the contents of the bag. p> Multi-level storage Mobile phones, tablets, power banks, umbrellas and other items can be stored in an orderly way Front snap pocket Front vertical zip pocket Side snap storage bag Large capacity: Large main compartment opening is easy And at first glance, it's legible. Multi-chamber design can classify and store various small items to meet daily needs Package includes: 1 tornister (four colors optional)