AD+ DesignN/AAndaseat has invested in human engineering for over 10 years and created the AD+ design. AD+ design applys the science of ergonomic for the chair workplace intending to maximize the healthy seating hours by reducing fatigue and discomfort. AD+ design significantly improves the sitting health for gamers office workers and people anytime anywhere sitting on chairs.N/AN/ADuraXtraAD+ LeatherN/AThe DuraXtra AD+ Leather is used on the high-end AndaSeat chairs offering smooth bonded PVC leather with scratch and stain resistant. The high-end quality of material was designed and made with the total comfort of human-kind in mind. Not only it is easy to clean but also much stronger to keep the shape to last. AD Plus PVC leather does not contains any harmful amounts of elements perfect for adults and kids.N/APhysical test performed by SGS for strength resistance stabilityN/AChemical test performed by SGS about Lead Cadmium DMF Phthalates PAHs.N/AN/ASyncTilt AD+ Reclining BackN/AThe reclining back tilts 90~160 degree with angle lock at any different positions. The AD+ Recline supports multi-functional tilt Mechanism handles heavy duty provides you with fully control over the suspension of the chair. It has adjustable tilt for increasing and decreasing tension by matching the body weight of the user for effortless secure and sturdy rocking without putting fatigue on muscles.N/AN/AEngaging Into A Luxurious Sitting Experience With AD+ Memory PillowsN/AUpgrade your experience with AD+ Memory Pillows sensitive to pressure and temperature molds to the shape of your body. Support your sitting posture to the next level.N/AN/A4D Armrests Offers Personalized SupportN/AFour dimensions-left & right forwards & backwards up & down tilt enables adjustments to exact angel you need to protect your carpal tunnel. The PU covered surface provides firm supports to your elbows.N/AN/A65mm PU Covered Wheel (King Size)N/AThe AD+ Plus PVC leather is used on the high-end andaseaT chairs offering smooth bonded PVC leather with scratch and stain resistant. The high-end quality of material was designed and made with the total comfort of human-kind in mind. Not only it is easy to clean but also much stronger to keep the shape to last. AD+ Plus PVC leather does not contains any harmful amounts of elements perfect for adults and kids.N/APhysical test performed by SGS for strength resistance stabilityN/AChemical test performed by SGS about Lead Cadmium DMF Phthalates PAHs.N/AN/ATitanSteelAD+ FrameworkN/AThe XL size TitanSteelAD+ Framework is made of 100% steel bent with no cut which enables the truly lasting lifetime use. Precisely manufactured high quality 22mm diameter steel frame is covered with a lifetime warranty. Only the best 2mm thick seamless steal is produced to ensure your chair will last the course of time.N/AN/AOc-TopsAD+ Aluminum BaseN/AOc-TopsAD+ Aluminum base has been designed and built to provide impressive stableness and durability