The swivel base is a five spoke, height-adjustable base with soft, braking casters. Pelle Frau® Color System leather upholstery that fits like a glove, a sculptural silhouette, and tone-on-tone stitching are hallmarks of Downtown executive and visitor chairs. The back is inspired by an elegant dress. The profile stays slim by hiding the built-in mechanisms. For added comfort, optional micro-perforation for the seat interior allows the chair to breathe.