Buy the MATEIN Travel Laptop Backpack in Grey.

Same MATEIN build as the other two, but it's the one you can actually buy with a proven track record behind it.

What was compared

MATEIN Travel Laptop Backpack, 15.6 Inch College School Computer Bag, Grey | Slim Sturdy B... — $40.74
MATEIN Beige Women Backpack for Work, 15.6 Inch Slim Travel Laptop Bag | Fits 15.6 Inch La... — $33.78
MATEIN 15.6 inch Travel Laptop Backpack, Cute Anti Theft Slim Sturdy Bag | Water Resistant... — $40.74

1. 114,181 ratings vs 1,155 on the Cute version
The Grey backpack sits on a review base nearly 100 times bigger than the MATEIN Cute Anti Theft, which has only 1,155 ratings and a lower 4.6 stars. That is not a fluke sample, that is years of real owners confirming the zippers and straps hold up.
2. The Cute version isn't even purchasable right now
That third MATEIN shows no featured offers and cannot ship to plenty of locations. A backpack you cannot reliably buy is not a real option, no matter how it looks in photos.
3. 9 in stock beats the Beige bag's last 2 units
The Beige Women's backpack is down to only 2 left in stock, meaning if you hesitate it's gone. Grey has 9 units sitting ready, so you're not racing a countdown timer to get the same core bag.
4. Neutral design outlasts a niche one
Grey is built and marketed as a business daypack for anyone, while the Beige option is explicitly a women's cut and the Cute one leans decorative. If this bag needs to work for school, office, gifting, or resale later, neutral wins every time.
5. Yes, the Beige one is cheaper. Doesn't matter.
The Beige Women's Backpack runs about $7 less, but you're trading that for a narrower use case and a bag that might be sold out by the time you decide. Seven dollars is nothing against getting a backpack you can actually use for years, in any setting.