I’m impressed. I used to carry the Nike Brasilia 9.5, and the Track Backpack (27L) feels about the same size but it’s on another level. This is a serious backpack. The chest strap helps with weight, the back padding is comfortable, and the layout just makes sense. There’s a spot for everything, laptop, clothes, and even a ventilated shoe section for spikes or sneakers. The cooler pocket is a great bonus. I just wish it took up half the bag instead of a third. I'm a thirsty guy, lol. I like that the side pockets fit two water bottles or a speaker, and I just wish the back zipper pocket was a bit bigger to fit my Beats and charger. I’d buy it again. I can see myself using it for a long hike or even heated yoga. This bag is pure quality.