Low end mountain bikes.....

[Kitsune06]

My 'hopper is 16". I'm not sure how much she weighs, though, just the frame and wheelset. Outfitted for commuting and errands, though, she's a little heavy.

For road bikes, I vote also that "Steel is Real" just having read the various facts and testimonials from ladies here. On Mtn bikes, though, I'm not so sure. I'm sure it depends... I like my aluminum bike, though. I'm not sure if the thickness of modern mtb designs is out of necessity for strength, enabled by lighter materials (double butted aluminum) or simply for visual appeal "It's thicker so it must be stronger"... likewise enabled by lighter materials. *shrug*