MATEIN 1007GRY User guide

Hello! I have reviewed the user guidelines for the MATEIN Backpack. The document provides information on the backpack's material, size, and water-resistance. It also includes instructions on how to properly use the USB charging port and prevent zipper openings. I'm ready to answer any questions you might have about this backpack.
Is this backpack waterproof?

How to avoid zipper opening?

USER GUIDELINE

Product Information

Brand: MATEIN

Material: Polyester Fabric

Color: Gray

Size: 18.3" x 13" x 7.8"

Weight: 2.5 LBS

Fits up to 17. 3 inch laptop

How to use the USB Charging Port?

Warm Tips:

*This is Water-Resistant backpack, can be used in drizzle days. Please do not expose it to heavy rain for a long time without any rain

cover.

*Please close the zipper completely and place the zipper puller at the bottom, just in case to avoid zipper opening due to strong shaking

when walking.