Granite Gear Vapor Trail

The lid can be attached to the vapor trail, ozone and other packages Nimbus Granite Gear uncovered. I want to know how it works incidental to the real world. Or if it is away from the pack in total.

I heard one person say they had ordered and liked that option. You might ask in light backpack Yahoo Group and I am sure you will get a better response. http://groups.yahoo.com/group/Backpackin ...

Here is a post about someone who made their own cover for this:
http://groups.yahoo.com/group/Backpackin ...