Does this pack have a harness good for...
Does this pack have a harness good for biking? I was looking at the Quasar and the Flare, two similar osprey packs, and both say they have one but I couldn't tell if this pack does.
A very small harness try to look at the "Ospery Manta"
The Comet is the same build as the Quasar so it will have the same harness. So in short, yes.
Also, because the Manta has a rigid frame for carrying hiking gear, I've seen it fit only 60-75% of people well while biking--when sitting in the "biking" position, the frame sometimes rubs in certain areas on the lower back as you pedal if the pack doesn't fit you well enough. I would actually recommend the Momentum 26--it's pretty sweet for biking.