This is a 24" aluminum frame 14 speed hybrid. The tires are 1 3/8" wide and fairly smooth- its clear the bike is meant for around town and paved trail use, which is what probably where 90% of kids biking is done.
Kids bikes are typically either absurdly heavy due to wide mtn bike tires and front shocks, or they are $400+ if you want a hybrid or road bike with quality parts. And even then, most 24" hybrids in your LBS will have only 7 or 8 speeds with no front derailleur.
This Diamondback uses grip twist shifters and Shimano Sora and Tourney components for shifting. Rear shifting is easy, but front shifting is a little tough at first for younger kids. Just be aware of this.
There is some assembly and adjusting, but the bike is mostly put together when it arrives. Basic knowledge of how components work together will be needed, otherwise you can take it to your LBS for assembly. One thing I did while assembling was repack the wheel bearings since the bike was already in pieces and there was little in the way of grease to begin with.
SIZING- Our daughter is 52" and this is about the shortest that should ride. The bike's top tube standover is about 24", and this is probably the most important measurement in terms of safety and use.
This is currently only $150 and free shipping for Prime members. There is a girl's version that is a soft pink, but its $200, and the black works best for us anyways when we go to sell it in a handful of years.
If you want a 24" multi-gear bike for your son or daughter for town and paved trail use, seriously consider this. Its WAY lighter than all the mountain bikes, rides WAY faster and easier than all the mountain bikes, is cheaper than LBS offerings, and has more gearing than what I have seen in shops. All for $150.
Nice review. I have twin boys that are 10 and have struggled to find the right bikes for them. I had plucked an early 90's Specialized sport rock out of the trash and we gave it an overhaul together. The 26" wheels are still a little too tall for them though. These Diamondback just may be the ticket to get them by awhile, thanks!