• Swivel with height adjustment mechanism or, swivel with height adjustment mechanism and recovery in position and height when leaving the seat. • Seat and backrest in flexible high-density polyurethane foam, flame-retardant. • Polished armrests, or in polyester painted steel plate with the possibility of incorporating an integral polyurethane top piece. • Stainless steel footrest. • Option of a cone shaped base (TRUMPET) or of a five-point star base (FIVE STAR). • Upholstered with 100% polyester or 100% vinyl fabric. Flame-retardant (UNE EN 1021-1 and 2:2015).