My son likes it, although he is small for his age and it is a little too big for him I'm afraid. As far as the bike goes, it isn't perfect but I'm not sure what mountain bike is at this price point. I've looked at a lot of the bikes offered for sale on Amazon and other stores. For anyone who complains about a geared bicycle in this size for under two hundred dollars has unrealstic expectations about bicycles. With bicycles you get what you pay for and you should expect to spend almost 2x as much to get a bike that is built better. I'm sorry but ALL new bikes will need to be adjusted and tightened after they are ridden the first few times. If these sub $200 bikes are ridden hard, they will require you to constantly tinker with them to keep them running smoothly. If you don't want to do either of these then you must buy from a local bike shop so they can do it and/or spend more $. Many of these shops will do the 1st tuneuup for "free" (that is why most LBS bikes are more expensive).
Onto this bike. This bike doesn't have much of a front shock - feels very firm - and my son is so light that it is essentially a shockless fork. The bike works great and he can go over a lot more bumps and hills than his single speed bike. It is heavy but, again, most of the sub $200 bikes weigh too much. The gear shifting isn't the best but it works, especially if you keep it lubed up. These gears are more susceptible to being nocked out of wack so if your kid throws the bike around & onto the ground (never a good idea for a mountain bike anyway) expect to have to adjust the gears or end up with bent deraileurs. I will update this review if I have any problems but so far so good, especially if you get it on sale!