The Everything Cage shown next to Salsa's stainless water bottle cage. It is about eight inches long, and the "wings" are a hair over five inches wide. The bottom of the cage is a rough circle about two and a half inches around.
The straps are what you would expect for a nylon tie down strap. They have nice Salsa Adventure By Bike tags on them, and are about nineteen inches long. The buckles are of the lace through type. If you are looking for faster access you may want to swap these for a set with quick release buckles. This type of buckle is easy to get nice and secure though, with less chances for failure.
For those wondering about weight, the Everything cage weighs in at 100gms. Both straps weighing in at 25gms. For comparison, the stainless bottle care weighs 52 gms. These things are light!
Bottom line on these is that for $20, you can't go wrong for the versatility they offer at the weight they are. I planning on using somewhere between 5 and 6 of these on various bikes. I will be posting photos of different uses for these cages in the coming days. I'm sure you won't have any trouble finding a use for one or two of these as well.