Yes — that's who it was designed for. Start at four pounds on a walk you'd already take. You don't need to be able to do anything else first.
Added weight changes the load on your joints, which is the point of it and also the reason to be sensible. If you have a back or knee condition, or you're pregnant or recently postpartum, check with your doctor before you start — and when you do, start at four pounds and add slowly. This isn't medical advice, and I'd rather say that plainly than bury a disclaimer.
Roughly 6 to 18.8 lb, depending on how many of the twelve one-pound weights you load and where you distribute them.
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