• Flexible seat and backrest joint. • Swivel with height adjustment mechanism, or swivel with multifunction mechanism for height adjustment and automatic recovery of position and height when leaving the seat. • Seat and backrest made of high density flexible polyurethane foam. • Large sized lumbar support with frontal extensions for comfortable armrests. • 360° stainless steel footrest with a special contour that facilitates the support and position of the foot. • Option of a cone shaped base (TRUMPET) or of a five-point star base (FIVE STAR). • Upholstery options: 100% polyester or 100% vinyl. Flame-retardant (UNE EN 1021-1 and 2:2015).