Next year, my boyfriend is planning on buying me a dirt bike. Personally, I'd prefer a quad so that I can pack along my gear on rides, but ... apparently I have no choice I don't want to have to leave my camera behind. So, I'd like to find a waterproof case that can fit into a small backpack. It needs to be able to protect my gear if I go flying off my bike. I'd like it to be able to carry a body and a couple of lenses. That's it. Any suggestions or recommendations would be appreciated. Thanks!