Design of the ACTIVA chair is based on natural and dynamic seating position. Gas cylinder allows to adjust the correct height of the chair and customize it for each workplace whether it is traditional height, almost standing or something in between. Furthermore, seat tilting and backrest height adjustment helps to change seating position frequently and easily. Thus, this chair allows to sit in short cycles, reducing backache, improving posture and blood circulation, increasing mobility and comfort. Three backrest designs have been developed according to different functional and aesthetic needs. The seat and backrest of ACTIVA can be upholstered with a wide range of coloured fabrics, natural or artificial leather. Design of the chair can be complemented with an adjustable footring.