You should see how high I see some idiots wearing their messenger bags....
I can wear a ski pack and fully cinch up the straps and it'll be a lot tighter and transfer the load to the hips and around the back, where they're supposed to be.
Originally Posted by cooker
Backpacks are a problem because they carry the load fairly high, making you more top-heavy, with more risk of falling over, and less maneuverability. Also they make your back sweat, weigh down your torso and strain your shoulders. Messenger bags ride a little lower, but the best place to carry a load is in a pannier because it's closest to the ground, and not dragging down your body. Second best is on top of the rear rack.