Size: 30*12*45CM Capacity: 20-35L The internal structure of the bag: mobile phone bag Bag internal structure: ID bag The internal structure of the bag: computer pocket Opening method: zipper Applicable gender: unisex / both men and women Material: Nylon With lock or not: no With or without rain cover: no Anti-seismic Function: reduce burden Processing methods: soft surface Hardness: Soft Pattern: Plaid Applicable gift-giving occasions: festivals Style: literary and national style Lining texture: polyester Types of accessories: Buckle Strap root number: double root Popular elements: Plaid Carrying parts: soft handle Outer bag type: three-dimensional bag Bag shapes: square vertical section With or without tie rod: No Carrying system: air cushion strap