Originally Posted by
Nick MxW
I personally use a sling backpack, it fits what I need (Most of the time) and its very aerodynamic compared to most backpacks. The only downside is I have to readjust its position every few minutes, but I do it without thinking.

Does yours have a cross strap? Mine does and that does tend to keep the bag snug. Downside to the bag is that it is a bit on the small side, but that gray/silver you see is highly reflective and continues along the entire length of the shoulder strap