Every bike commuter roundup picks this one first. Hard to argue when your back stays dry at 26 liters.
4.5 out of 5 stars (235 reviews)
Osprey built the Radial around one insight: commuters hate showing up to work with a sweaty back. The AirSpeed suspended mesh panel holds the pack off your back entirely, channeling air where you need it most. Expands from 26 to 34 liters with a zipper, so you can pack light in the morning and still fit groceries on the way home. Padded laptop sleeve, integrated high-vis rain cover, and a kickstand so it doesn't flop over at your desk. 100% recycled nylon.
