Examples of inverted radio relic systems from TNG-Cluster. On the top X-ray surface brightness maps are overlaid with the mass (white) and radio contours (green). The bottom row provides 500-kpc slices of the radial momentum, whereby the midplane and center of the slice pass through the relic and cluster centers. The dotted circle marks the R_500c of the cluster. The inverted radio relics coincide with an infalling motion of the gas. The solid line marks the path of the infalling subhalo, which we suspect creates the inverted morphology of the relics.