Gravity-only (black lines) and gas (coloured lines) spherically averaged radial profiles around halos of two mass bins at z = 0. The solid lines correspond to exclusively isolated halos, while in the dashed lines we do not impose any isolation criterion. Top row: Density profiles, where the gas is normalised by the cosmic gas fraction. Middle row: Enclosed mass profiles over the gravity-only enclosed mass, where the gas is normalised by the cosmic gas fraction. Lower row: Radial velocity profiles over v₂₀₀.