Seat carbon fibre shell molded in autoclave. Perforated seat shell. Rear holes for compatibility with vantilation system AIR FLOW. Large shoulder harness slots to accommodate various heights. High side bolsters for lateral leg support. Shaped security headrest. Removable back cushion, base, split leg rests to allow maximum individul seating comfort. Rubber dots for improved grip inserts. Upholstered entirely in high breathability AIRTEX® material. Upholstered customized on demand.HANS® and HSC PATENT (HC/893) compatible. XL VERSION LARGER AND HIGHER.