Arms found on upholstered pieces that are slightly flared and are the same height as the back.
Brompton Fixed Back Tuxedo Arm Sofa – Stock- George Smith
Klaussner Jordan Large 3 Cushion Tuxedo Arm Sofa With Scatterback – Morris Home – Sofas
Tuxedo Component Lounge Sofa With Arms – Hivemodern.com
Anderson Tuxedo Sofa – Shelter Arm Sofa – Ethan Allen