Varier Human Instruments born of a human idea - Your body is engineered for movement. Activity is essential to its well being. A conventional chair is an instrument of inactivity, fundamentally unsuited to the human body. We don't make conventional chairs. We create precision human instruments to keep your body in its natural state of activity. Human Instruments Collection offers chairs for desk work, home office and dining, that promote movement and variation to keep the body in its natural state of activity. The unconventional design keeps the spine in its natural curvature and the spinal disks dynamic; blood circulation is active and oxygen supply is improved, leading to better concentration and overall well being. Features: -Traditional style.-Promotes active sitting.-Keeps you breathing deeply, giving your energy levels and powers to concentration in valuable boost.-Supports you in the open balans 'kneeling' instead of the erect or right-angled posture.-Allows your spine to find its natural curve while strengthening your back muscles.-Creates an open angle between torso and thighs breathing and thus oxygen supply is enhanced.-Responds to your body weight to tip you forwards or backwards.-Comes with adjustable gas lift, range of activities and different desk heights.-Casters make it ideal for work that involves a lot of movement.-This item is non-returnable.-Distressed: No.-Upholstered: Yes .-Country of Manufacture: Norway.Dimensions: -Overall dimensions: 28'' H x 23'' W x 23'' D.-Overall Product Weight: 22 lbs.Warranty: -Manufacturer provides 7 year warranty on wood and 5 year warranty on metal.