b'optional featuresThe following are optional extras to the range.Lumbar SupportPolished Base Seat SlideInflatableInflatableadd 60 add 32 Lumbar Seat Padadd 37 add 42XL Seat Pad580W x 520D add 75KA354 KA344 KA340EXTRA HIGH BACK WITH HEADRESTEXTRA HIGH BACK WITHEXTRA HIGH BACK& MULTIFUNCTIONAL ARMS MULTIFUNCTIONAL ARMS WITHOUT ARMS Inflatable FoldingX-4D Arm Pad Memory Foam Thorax Support & Heightadd 25 Seat add 37 Adjustableadd 55Arms39 www.airseating.co.uk add 50'