About the Radial 34 via Osprey: Active suspension backpanel uses innovative load lifters to the add tension to the harness which adjusts to riding position and keeps the pack stable Airspeed backpanel offfers great ventilation and comfort Bike specific features include: Lid-Lock helment rentention, blinker light attachment, Refelctive accents, and hi-vis raincover Intergrated "kickstand" keeps the pack upright and verticle for easy loading and unloading Top zip access to padded laptop sleeve Heat embossed top and side pocket offers easy access to keys, glasses, and phone without scratching valuable items Front organizational pocket Removable hipbelt, adjustable sternum strap with integrated whistle FROM ME, THAT USED IT: This pack is in excellent used condition. As it has been used, it has dirt marks on it in some places, nothing gross or major stains, just some wear marks. Also, inside the bottom zipper compartment, it has it's yellow rain cover. All the zippers are in excellent condition.... I just so happen to own A LOT of Osprey Packs & I'm just not using this one as much anymore. I tried to get photos of all the pockets, but it also has 2 either side zipper closure pockets, not photo-ed. I am 5'9" woman, I was on the break-point in spine measurement between S/M or M/L. I went with the larger, it was super comfy. I love offers... but hey, don't be weird about low-balling the price.