b'Optional FeaturesThe following are optional extras to the range.Lumbar SupportPolished Base Seat SlideInflatableInflatable Synchro add 60 (60mm)Lumbar Seat Pad Mechanism add 32 add 30 add 42 withRatchet Back AdjustmentXL Seat Pad no oncost580W x 520D add 75 KA334 KA330 Inflatable FoldingX-4D Arm Pad Memory Coccyx SeatHIGH BACKWITH HIGH BACKThorax Support & Heightadd 25 Foam SeatCut Out MULTIFUNCTIONAL ARMS WITHOUT ARMS add 30 Adjustableadd 55 add 30Armsadd 5033 www.airseating.co.uk'