A gas Giant is a planet composed mostly or entirely of a mixture of gases. They are usually larger than many other planets. Only Tibannagas can be found on them.
Gas Giants are planets that are larger than ten standard planetary units in size but less than the necessary size to start the deuterium fusion process that ignites them into dwarfs (typically brown dwarfs)
A gas giant is a massive planet with a thick atmosphere and a dense molten core. Gas giants lack solid surfaces, they lack surfaces altogether since the gases that make them up simply become thinner and thinner with increasing distance from the planets' centers, eventually becoming indistinguishable from the interstellar medium. Therefore landing on a gas giant may or may not be possible, depending on the size and composition of its core.
Gas giants are a major source of Tibanna gas, which is refined for production and transport in collection platforms and used in hyperdrive coolant for starships, as well as in the production of blasters.
Many of the layers of gas are poisonous, and the pressure and temperature are far above what a human could tolerate. But from approximately 150 to 180 km (93 to 110 mi) down from outer space, there is a habitable layer known as the Bespin Life Zone. This layer has an oxygen atmosphere with the temperature and pressure that makes it ideal for human life.