Just one more woman's perspective on the men's frame. I have the Men's Trailz (not the Mountain Trails) and I am also 5'4" and I can stand over the frame just fine. I agree with what someone else said about seat height - I wouldn't expect (on a men's or women's frame) to be able to touch the ground very well while sitting on the seat. I come off the seat when I stop. The cross bar is lower than on some men's bikes I've ridden - you can see from the photos that it does slope down somewhat. In hindsight, I may have considered the women's model just because it would be easier to get on and off the bike, but my husband uses the bike occasionally and wouldn't be fond of the pink, and I also heard that the women's bike doesn't have a mount (screws) for a water bottle cage.