When you go everywhere by bike, you need a backpack that's up for the ride. The Dakine Pulse Backpack was designed with human powered commuters in mind, with cyclist friendly features such as a U lock pocket and reflective detailing. The polyester fabric is tough to resist damage, and the black colorway has a PU coating to repel light rain. Keep your papers crisp and organized in the internal document sleeve so you can get that promotion you've been working towards. A padded, fleece lined pocket protects your tablet computer, and a front organizer pocket keeps smaller stuff in order. The adjustable sternum strap prevents your pack from swinging around when you're pedaling hard.