Synchron Plus Mechanism
This type of mechanism is the most advanced on the market and recommended by all ergonomics specialists. The seat and backrest synchronously and automatically adapt to our movements. Therefore, when the backrest is tilted forwards or backwards, the seat tilt is also automatically adjusted at the same time, resulting in a dynamic and perfect posture. An anti-return safety system prevents hurting the spine.
This type of armrest can only be found in high-end ergonomic chairs, allowing total adjustment of the height, width, angle and depth.
This function enables adjusting the depth of the seat adapting it to the length of each user´s legs, thereby obtaining a more comfortable and healthy position while we are working. This type of mechanism is normally used in high-end ergonomic chairs.
Lumbar arch support
The lumbar adjustment enables adjusting the pressure of the backrest in the lower back. Back injuries are one of the most common occupational health problems, so we recommend using a chair that incorporates this type of adjustment that allows us to create a more natural support that follows the curve of our back.
The backrest is height-adjustable by means of a sliding system. This type of mechanism is only found in high-end ergonomic chairs. By adjusting the height of the backrest, we can adapt it to the curvature of the back by reducing the stress on the lumbar and shoulder area.
The use of headrests is highly recommended as it helps to rest the vertebrae in the dorsal area without subjecting the spine to excessive twisting.
Mesh chairs are breathable, highly recommended in warm environments. There is a trend in the office industry towards this type of chair as they do not build up dust or dirt and are easier to clean than traditional chairs.
Daily 8-hour use
This chair is suitable due to its morphological conditions for daily use of more than 8 hours. It is an ideal chair for professional and intensive use which can also be used
This product is among the most outstanding of our extensive catalogue due to its characteristics and great quality/price ratio. Definitely a safe bet
Keystone Chair With Headrest Green
- Shipping costs are totally free. If the item is in stock, you will receive it within 24/48 hours. Shipments are made by express courier companies, shipping with tracking number and insured. The delivery will be made at the door of your home.
- The cost of the return is also free. If you have changed your mind or if you no longer need the item you purchased, you can return it within the first 30 days after receipt for a full refund.
- In addition, we will take care of removing the product so you do not have to worry about anything. Some stores charge the withdrawal of the product as an additional service not included in the return. At Ofichairs returns are 100% free, without tricks and that is why we make it very easy for you. If the product does not convince you, we will take care of sending you a courier to pick up the package from your home without you having to pay anything for it. You will find more information in the shipping section here.
The future is Keystone, designed and created from the shape of the human body to provide the user with maximum comfort. The chair where art and science come together for the first time.
Keystone is a highly technical designer chair. The chair´s entire frame is made of chrome-plated aluminium. Its cutting-edge synchron mechanism allows to control the movements from a central lever. An innovative design that can be adapted to the needs of each user. So you can adjust the back height, seat height, seat depth, armrest height and angle, tilt, hardness and height of the backrest and, last but not least, the height and angle of the headrest, all from a single central lever.
Keystone comes in a wide range of colours and configurations, available in up to 4 different versions: click on the link to see the keystone chair with a mesh backrest, keystone mesh backrest with headrest, keystone natural leather chair or the keystonenatural leather chair with headrest.
Recommended by the best ergonomics specialists. Designed specifically for those people who spend more than 5 hours of their working day sitting down.
- Aluminium frame
- Seat height adjustment
- Multi-position synchronisation mechanism for adjusting the seat and backrest. Individually adjustable to body weight, can be locked in different positions
- Flexible, comfortable lumbar arch support and pressure can be adjusted by means of the height adjustment of the backrest
- 4D horizontally and vertically adjustable armrests
- Ergonomic seat with adjustable seat depth
- Height and angle adjustable headrest
- Height-adjustable 4-stroke backrest
- Breathable abrasion sturdy mesh
- This chair meets all the safety requirements for office and contract spaces in accordance with DIN EN 1335 Part 1-3
- 11x65mm (silent rolling)
- seat depth
- maximum weight
- up to 150kg
- packaging measures
- seat width
- height from the ground
- backrest height
- seat height
- Daily 8-hour use
- Manufactured in accordance with the European EN-1335 standard
We ship within 24/48h
Discounts for professionals
Wholesale leader with real stock
If you are not convinced, Return it!