Erwin Müller Sheepswool Car Seat Wedge Cushion. This cushion supports an upright seating position and can relieve the back and lumbar vertebrae. The composite foam with a density of 120 kg/m³ is a particularly firm, robust, and durable foam. Ideal for wedge cushions, venous support, and positioning aids due to its high load capacity. The surface is made of pure sheepswool and offers excellent properties of this high-quality natural material. It feels wonderfully soft, is pleasantly warming, breathable, and helps regulate temperature and moisture. Surrounded by a decorative border.