Introduction
Thank you for choosing the SHRRADOO Anti Theft Laptop Backpack. This manual provides essential information for the proper setup, operation, and maintenance of your new backpack. Designed for convenience and security, this backpack is ideal for travel, school, and daily use.

Image: Front view of the SHRRADOO Anti Theft Laptop Backpack, showcasing its sleek design and main compartments.
Key Features
- Spacious Storage: One separate laptop compartment accommodates up to a 16.3-inch laptop, along with 15.6-inch, 14-inch, and 13-inch Macbooks/Laptops. A spacious packing compartment provides ample room for daily necessities and tech accessories.
- Organized Pockets: The front compartment features multiple pockets, pen pockets, and a key fob hook for organized storage and easy access to items.
- Integrated USB Charging Port: Equipped with a built-in USB charger and charging cable for convenient on-the-go phone charging. (Note: Power bank not included).
- Password Lock Design: A unique password lock provides enhanced security for your belongings.
- Luggage Strap: Allows the backpack to securely fit on luggage/suitcases, sliding over the upright handle tube for easier transport.
- Comfortable and Breathable Material: Adjustable shoulder straps and back are designed with comfortable and breathable mesh, featuring a foam cushion backrest for maximum back support and heat dissipation.
- Durable Construction: Features a foam-filled top handle for comfortable, long-lasting use and two "S" shaped curve filled shoulder straps for strength enhancement.

Image: Illustration of the backpack's large capacity and various internal and external pockets, including the front access pocket, laptop pocket, and side pockets for umbrellas or cups.

Image: Close-up of the backpack's back panel, highlighting the breathable mesh design for ventilation and comfort.
Setup
USB Charging Port
The backpack features a built-in USB charging port for convenient device charging. To use it:
- Locate the internal charging cable inside the backpack.
- Connect your own power bank to the internal charging cable.
- Connect your device's USB cable to the external USB port on the side of the backpack.
- Plug your device into its USB cable to begin charging.
Note: The backpack itself does not provide power. A power bank is required and not included.

Image: Detailed view of the external USB charging port and the integrated password lock on the backpack.
Password Lock Design
The combination lock on this product is factory set to 000. To set your personal 3-digit password:
- Ensure the lock is set to the default combination (000).
- Push the password setting button (A) in the direction of the arrow and keep it in this state.
- While holding button A, dial your desired 3-digit password (B).
- Release button A to set your new password.
- To unlock, dial your set password and push button C to release the zipper heads.
Important: Be sure to remember the password number you set.

Image: Step-by-step guide on how to set and use the 3-digit combination password lock on the backpack.
Operation
This backpack is designed for versatile use and comfort.
- Laptop Compartment: Utilize the dedicated padded compartment at the back for your laptop to ensure its protection and stability. An internal shockproof belt helps secure your device.
- Main Compartment: Use the spacious main compartment for larger items like books, clothes, or other daily essentials.
- Front Pockets: Organize smaller items such as pens, keys, and personal accessories in the various front pockets.
- Side Pockets: The mesh side pockets are suitable for water bottles, umbrellas, or other quick-access items.
- Luggage Strap Usage: For easier travel, slide the luggage strap located on the back of the backpack over the upright handle tube of your suitcase.
- Comfortable Wear: Adjust the "S" shaped shoulder straps to fit your body comfortably. The breathable mesh back panel helps reduce heat and provides support during prolonged wear. Tighten the breast strap to stabilize the center of gravity when carrying heavy loads.

Image: Two individuals wearing the SHRRADOO Anti Theft Laptop Backpack, demonstrating its comfortable fit and suitable size for various users.
Maintenance
To ensure the longevity and appearance of your SHRRADOO backpack:
- Cleaning: Wipe the exterior with a damp cloth and mild soap. Do not machine wash or tumble dry.
- Drying: Air dry completely before storing to prevent mold or mildew.
- Storage: Store in a cool, dry place away from direct sunlight when not in use.
- Avoid Overloading: While durable, avoid consistently overloading the backpack beyond its intended capacity to prevent strain on zippers and seams.
Troubleshooting
- Forgot Password: If you forget your password, you will need to reset the lock. Refer to the "Password Lock Design" section under Setup for instructions on how to set a new combination.
- USB Port Not Charging:
- Ensure your power bank is fully charged and properly connected to the internal cable.
- Verify that your device's charging cable is securely connected to both your device and the external USB port.
- Test with a different power bank or charging cable to rule out faulty accessories.
- Zipper Issues: If zippers become stiff, apply a small amount of zipper lubricant or graphite from a pencil along the teeth. Avoid forcing stuck zippers.
Specifications
| Attribute | Detail |
|---|---|
| Product Dimensions | 14 x 10.5 x 19.5 inches |
| Item Weight | 1.83 pounds |
| Department | Mens (suitable for all genders) |
| Manufacturer | SHRRADOO |
| ASIN | B07SDNTVFD |
| Country of Origin | China |
| Item Model Number | 16017A |
| Age Range Description | Adult |
| Number Of Items | 1 |
| Units | 1 Count |
| Capacity Total | 40 Liters |
Warranty and Support
SHRRADOO offers a comprehensive after-sales service for your peace of mind.
We solemnly promise that within one year of receiving this product, if any quality defects occur during normal use, you only need to take a photo of the defective product and contact us. We will reply with a solution to the problem within 24 hours, or send you a new identical product for free to replace the defective product.
For support, please refer to the contact information provided at your point of purchase or on the official SHRRADOO website.