I'm 5'10 and my weight tends to fluctuate between 220 and 230. This model lists the weight limit as 250 lbs. When I got the Dahon I was about 30 lbs heavier, which was over the suggested weight limit by a bit, and after a few rides I never once felt like that would actually be an issue. The seat post on the GZ doesn't seem super and it took me a few adjustments to get it to support my weight just sitting. The minimal setup sheet contains a user submitted suggestion about sanding down the contact point to add friction. I'm about to take it out so we'll see if it holds my weight riding.