>>1698426lots of children's bikes are really overweight, almost as heavy as a 19 inch MTB
they also can come with terrible brakes that flex way too much, and go out of alignment
some of the alloy framed kids bikes come with better brakes and gears and are legitimately light weight
I have sold 20 and 24 inch wheel bikes to old people who are very short and have problems with their knees or hips
the people with hip replacements seem to prefer swinging their leg over the rear wheel
mini velos are light and fast and have 20 inch wheel sizes combined with a larger frame so that long seat posts and tall handle bars are not needed
the opposite approach is something like a Raleigh model 20 Compact
or better yet one of the many bikes that imitate its form but use the more common 68x35 mm BSA bottom bracket
