Yes, they’re called “coilovers” because the coil (spring) on your Fit and most other cars sits “over” the shock. Your Fit actually came with coilovers from the factory. What they’re suggesting would technically be called “adjustable” coilovers but no one really refers to them as such. Adjustablity meaning you can raise and lower the ride height as well as the compression and rebound rates of the shock.
The reason I did not suggest coilovers is because the vast majority of coilover systems have higher spring rates and more aggressively valved shocks than the original equipment coilovers your car came with. In other words, they will improve handling (less body roll, better braking, etc) but hurt ride “quality”. So if you think your ride is too rough now, coilovers will only make it more rough.
I don’t care what anyone tells you, you will not be able to make your ride softer than stock by purchasing coilovers and setting them to their softest setting. Whichever coilover system you theoretically buy, if you set them up as the manufacturer designed them, your car will sit at least an inch lower than it does now and will ride much more tightly (rough) than it does now.
Any modification you make to a car is going to have positive and negative effects. With coilovers your car will probably look a little better and more aggressive because it sits lower, but I don’t think you’ll be happy with the ride quality at all.
I’ve got a slammed Honda S2000 sitting on Tein Flex coilovers (extremely high spring rates) but I like a very tight feeling car and don’t mind a little compromise in order to improve handling. Tein makes a coilover called a “Luxury Spec” or something like that which may ride as soft as you’d like but I didn’t see a Fit application on their website.