Woah, razer has backpacks now too?
Well, I'd never heard of the razer backpack. If you're a heavy razer fan, then go ahead.
I like razer for their mice and keyboard. The rest, in my opinion, is a bit overpriced for the quality offered. Not sure about the pack (you can check online reviews) but I'd stick with some other brands known for their quality.
I've had a Cat backpack for like 10 years now and it's still like new after being used and abused. It's a really cool bag and I recommend Cat packs 100%.
I've also heard JanSport and LL Bean are really really good brands but I've neved had anything of them.
Suming it up, I'd only go for the Razer one if you're a really heavy razer fan.
Other than that, I'd pick between Cat, JanSport and LL Bean.
This is odd, never thought about answering a question about backpacks in here