Riva is an intensive, hardworking, task seating series. The mesh version offers a mid and high, fixed and ratchet back with 3 seat sizes. The upholstered version pairs 2 back sizes with 3 seat sizes. Utilize 8 arms including an attractive fully upholstered C arm. Apply swivel, synchro, seat slide and stool kit controls. Apply 7 mesh colors including a sleek black or deep cardinal red. Rest it all atop 4 base options with carpet casters, hard floor casters or glides.