I love this backpack! The color shift always makes me happy and it hold so much! I've used it for work and for the gym. My laptop doesn't fit, but it is a gaming laptop. My Samsung tablet fits fine though!
My only issue is that I can't comfortably use the yoga mat straps on the bottom. They're just velcro instead of the buckle adjuster I thought it would be. I have the popflex mat shown in the listing pics and it barely fits in the straps. It has to be secured on the longest setting. This makes it so the pointy bit of the velcro that isn't being used keeps catching on my clothes. I'm a little worried that it'll damage my clothes in the long run, so I'll just keep using the carry strap the yoga mat came with.
Overall, I really love this bag! Even with the whole yoga mat thing, I'd recommend it!