AIR SUSPENSION SEAT. NARROW BASE SUSPENSION 12 VOLT. (SHOWN WITH OPTIONAL HEAADREST $201.30 AND ARMRESTS $206.80 EACH). The High-comfort seat for large construction machinery. The pneumatical suspension with APS (Automatic Positioning System) ensures that contact with the pedals remains unaffected. The integrated fore/aft isolator reduces horizontal vibrations in the driving direction. The passive climate system (active carbon layer) improve the seat climate. Experience and use operating comfort with optimum ergonomical user guidance.