The Buzz from Tom Bihn is just fabulous. It's truely possible to forget you're wearing it. From my standpoint, and the OP, it has a fairly low capacity, more so because it's designed to protect a laptop. If you can live with this issue, I can't recommend it too highly.
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Some people are like a Slinky ... not really good for anything, but you still can't help but smile when you shove them down the stairs.