Once riding season starts up, I am going to be taking my Drebel with me into the mountains quite a bit for photography. The slight complication here is that I will be riding my motorcycle. I am looking for a backpack that I can wear while riding that is secure and comfortable. I also need it to withstand a crash of 90+ mph. Well...just kidding about that last part but hopefully it will offer some pretty decent protection for my camera and lenses. The biggest thing is that it needs to be comfortable and light. I move around a lot on the bike when I am going through the curves and I don't want a lot of weight on my back. Thanks everyone!!