The Roca Ona In-Wash In-Tank Back to Wall toilet integrates the cistern directly into its vitreous china pan, eliminating the requirement for an in-wall frame or external flush buttons. Engineered with vortex rimless flushing and a heated soft-close seat, the unit incorporates hands-free foot-sensor activation, automatic flushing, built-in deodorisation, and UV-assisted antibacterial nozzle cleaning to streamline daily hygiene.