Review on 🎒 15.6'' Fashion Waterproof Travel Laptop Backpack for Men and Women - Heavy Duty Work College Darkblue Bag with USB Charging Port - Casual Daypack, Computer Book Bag - Ideal Gift for Teen Girls and Boys by Dana Cardenas

This is a pretty decent size. It looks quite small in the picture. But that's not so little. It would be nice to travel. It's waterproof. And there's a pretty decent amount of storage space. But you need a power bank for your backpack so you can charge your phone on the go. I didn't know about it until I ordered a backpack and it was here. The power bank usually costs around $20, but the backpack is not included. So if you still want to charge your phone on the go, buy an external battery.