The laptop storage sleeve has nice protective padding and will accommodate up to a 15" laptop with no problem.
The water bottle holders on the outside hold bottles securely (unlike some similar packs). There is a good selection of pockets and spaces for pens, calculators, keys, and books. I like the compression straps, the sternum strap, and non-removable waist belt. The mesh padding helps keep your back dry. The zippers are nice and beefy.