Thanks so much for posting this! I'm currently debating between the 25 and the 30 and this really helped.I'm 5'4" and a size 2/4. I can arm-carry no problem, but honestly it's so small that if you don't pack much in it you can easily wrist-carry. The only issue is that my watch gets in the way! If you plan on bending your elbow the only person carrying it there would have to be child-sized.
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