Waterproof outdoor travel backpack

Capacity: 20-35L
Internal structure of the bag: zipper pocket, mobile phone bag, document bag
Opening method: zipper
Material: PU leather
With or without rain cover: Yes
Function: breathable, waterproof
Number of shoulder straps: three
Lifting parts: soft handle
Outer bag type: three-dimensional bag
Bag shapes: square vertical section
Carrying system: air cushion strap