I got this backpack from Amazon based on recommendations... 4.8 stars with 80,000 reviews, lol. It's great, especially for the price ($30). It fits my pretty bulky 15" laptop.

Amazon link

Yep. This one: https://www.amazon.com/gp/product/B06XZTZ7GB/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&th=1

I've used it for 4 years every day, plus on trips, and it still looks new. Best backpack I've owned. It's got plenty of room for everything, and it's under $30.

matein backpacks have lots of space and the laptop backpack is also on sale on amazon right now.

I got this one, and it has been awesome so far.

https://www.amazon.com/Backpack-Business-Charging-Resistant-Computer/dp/B06XZTZ7GB/ref=mp_s_a_1_3?ie=UTF8&qid=1550377598&sr=8-3&pi=AC_SX236_SY340_FMwebp_QL65&keywords=tech+backpack&dpPl=1&dpID=51DWNx33d4L&ref=plSrch

https://www.amazon.com/gp/product/B06XZTZ7GB/ref=ppx_yo_dt_b_asin_title_o09_s00?ie=UTF8&psc=1

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This is my daily driver. It has hella compartments and is not to bulky. I've had it for about 4 years now and it's my favorite backpack.