What's in your bag? Uhhh, something of everything. This holds at least two large 1" binders, books, water bottle, iPad, a 15" laptop+charger, misc pens, yadda yadda. The strap is comfortable and the adjustment points on it set it apart not to mention the tablet pocket on the back of the bag for easy access. I'm not a fan (did you know that's short for fanatic?) for the velcro closure of the bag flap, but I'll live. Good for commuting and daresay would be ok for bike commuting if you live in a place where such is possible without having a target on you for enraged drivers - I, do not live in such a place so the bike+bag thing take with a grain of salt.