I think this was once a BagBoy unit..
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Good I guess if you're past the stage in life where you can walk and carry your stuff. If so, you probably should have walked and carried stuff more.
i just use a jogging stroller with the 3 wheels works great
At one time Silverwillow carried the Rugged Gear units. I spoke with Josh about them, and they (Silverwillow) were looking at building and selling their own units. Don't know if they've made any progress on the project, but it may be worth asking them about it next time you're out there.