AWARD-WINNING ESTHETICS : Sihoo Doro S300, a winner of a German Design Award, is not only comfortable to sit in but also pleasing to look at. The main structure of the chair is crafted from a single piece of aluminum alloy, created through 13 procedures to achieve its beautiful and magnificent appearance.UNIQUE ENGINE : We've come far to provide the 6th generation of mechanismThe mechanism is the ergonomic chair's core, showcasing the highest degree of technical sophistication, and it plays a crucial role in determining the overall seating experience.EASILY CUSTOMIZABLE : With all levers placed where your hands can easily reach, you can easily adjust all functions for your bottom, back, arms, and head. Simply put, the S300 customizes itself to your preferences.5 YEAR WARRANTY : We are confident in the quality of our products and offer a 5-year warranty for all parts, excluding the mesh, which comes with a 3-year warranty.Please contact us if you encounter any issues with your chair, and we will replace any defective parts promptly.FeaturesA weightless recline experienceWith the help of anti-gravity mechanism, whenever you need to relax a bit during your work, you can smoothly recline on the Sihoo Doro S300, stop at any angle you want (without the need to lock the backrest at a certain angle), and return to an upright position effortlessly.Lumbar support that cradles your backThe wing-like dual dynamic lumbar support consists of two separate pads, offering comprehensive and dynamic support for your lower back, regardless of your body shape and sitting posture. Additionally, the gas lift allows you to fine-tune the lumbar support (90°-105°) for a perfect fit.The mesh has a net structure that has good airflow and does not cause perspiration, while being pleasant to use and helpful for blood circulation. Its inherent elasticity and durability allow it to support the back more flexibly and be used for a long time.  Made from Italian velvet, Dupont TPEE. The world's leading textile company, it is highly flexible and resilient. It is a thermoplastic with highly functional elastic and flexible plastic properties that is used to create flexible parts that also require mechanical strength and durability.6D armrestThe chair is equipped with 6D armrests that are fully adjustable (Up Down, Front Back, In Out, Upside down, Rotate 75 °, Linked armrest with backrest), providing customized arm support for maximum comfort.Rest your head in spacious softnessWith the soft-to-the-touch headrest that perfectly contours to the curve ofyour neck while providing a generously sized surface, you can comfortablyrest your head on the side and relax from your tasks.TUV Rheinland BIFMA CertificationAt SIHOO, we understand the importance of providing our customers with the highest standard of ergonomic office chairs. That's why we've gone the extra mile to ensure that the SIHOO S300 meets the rigorous standards set by TUV Rheinland BIFMA.6th generation of mechanismThe mechanism is the ergonomic chair's core, showcasing the highest degree of technical sophistication, and it plays a crucial role in determining the overall seating experience.Coordinated support for the full bodyWhen reclining in a standard chair, the increased pressure on your thighs can lead to muscle strains, especially during prolonged periods. The Sihoo Doro S300's seat cushion and armrests automatically adjust to coordinate with the backrest when reclining. This feature ensures that various parts of your body remain relaxed and comfortable, enhancing your overall seating experience.SpecificationsBrand: SIHOOModel: S3 Size: 70 x 70 x 120 - 130cmGas Lift: Class 4 Gaslift 100-4, Passed BIFMA TestWheel Material: PU Nylon CastorChair Leg: 350mm Polished Aluminum BaseSliding Seat: High Quality MeshArmrest: 6D Bionic Joint ArmrestBack: High Quality PA+ Fiber MeshLumbar Support: PA+ Fiber S ShapeHeadrest: PP+ FiberColour: BlackPackage1 x SIHOO Ergonomic Office Chair1 x Accessories and Tools Kit1 x User ManualWe accept Change of Mind returns for 14 days after you have received the item in cases where you have changed your mind or made an incorrect purchase and wish to return the product. This also applies to orders cancelled when the item has already been dispatched from our warehouse. The item must be in a re-saleable condition to qualify for a change of mind refund. Deductions may apply including Initial and Return Shipping, as well as restocking fee of 20% of the product price Delivery excludes the following postcodes:2880-2889, 5201-5749, 4309-4453, 4580-4693, 4454-4499, 4694-4802, 4804-4805, 9920-9960, 4803, 4806-4999, 9961-9998, 2648, 2715, 2717-2719, 2731-2739, 3221-3334, 3342-3349, 3351-3352, 3357-3426, 3444-3688, 3691- 3749, 3812-3909, 3921-3925, 3945-3974, 3979, 3984-3999, 2264-2281, 2311-2484, 2487-2499, 2533-2554, 2575-2599, 2621-2639,2642-2647, 2649-2707, 2710- 2714, 2716, 2720-2730, 2787-2879, 6215-6700, 6701-6797, 7020-7049, 7054, 7109-7150, 7155-7171, 7173-7247, 7255-7257, 7330-7799If your postcode is within the above ranges then please contact us for a postage quote.