Deuter Race EXP Air w/3L Res.

Great for bike commuting, but a little small
I use this for commuting to work. I'm not a fan of backpacks that have a million straps on them and this one is pretty simplistic. Shoulder straps are lightweight and breathable, but they don't have much padding. That hasn't been a problem since you can't fit too much in this backpack. I can roll my jeans, tshirt, underwear and socks into a towel and that pretty much fills the back. There's a small outside pocket where I put a small bottle of shampoo, deodorant and soap for the shower at work. External side pockets are good for a coil bike lock and to hold gloves, glasses, headphones, etc. The AirComfort back does help to keep my back from getting too sweaty. I sweat a lot and with a normal backpack my back is drenched. With this it still certainly gets sweaty but only a fraction of what it does with a normal backpack. The quality is very good and overall I'm very happy. I just wish it was *slightly* larger than it is.

great product
my third deuter pack and i wont go with anything but deuter. perfect for putting shoes few school books and netbook in for commuting to school and back.

Workhorse
This pack is the best I've used. It allows me to spread my cargo out into several spots for even weight distribution and even with body armor and a helmet attached still feels comfortable. The Aircomfort system is a must in any pack. Forget back sponge packs. Get it!