Very similar (updated model?) to one I have. It works ok - I can carry a multi-tool, spare tube, CO2, and I usually have a jacket and small pump either stuck in the outer bungees or the pump hooked to my bike. I wouldn't use it on a long or solo ride without figuring out how to rig a first aid kit to it somewhere (I have room for that in my other pack) but it works ok for short rides or races where I would expect aid to be readily available.
My only complaint is that my pack is black...so the water is always hot
