I've been using the SUPACOOL backpack for about 3 months now, and it's become my trusty sidekick. The waterproof Oxford fabric has saved my laptop more than once during unexpected rain showers—though I did give it a quick waterproofing spray for extra peace of mind.

The USB charging port is a game-changer. I keep a power bank in the designated inner pocket, and threading the cable through the built-in pass-through means no more awkward backpack rummaging during my train commute. (Pro tip: The product description is right—it doesn’t include the power bank itself, but setup takes 10 seconds.)

As someone who carries both work gear and gym clothes daily, the compartment layout surprised me. The main section swallows my 15.6” work laptop easily, while the front organizer keeps pens, keys, and AirPods from becoming a black hole situation. The side pockets perfectly fit my 32oz water bottle without bulging.

After daily abuse—including being stuffed under airplane seats—the zippers are still smooth operators. The straps distribute weight well even when I overpack (which is always). For $30? Way better than my old Jansport that cost twice as much.

One heads-up: Like another reviewer mentioned, occasionally check that fabric flaps aren’t caught in zippers—happened to me once before I got into the habit of smoothing them down first.