Sihoo M57 ergonomic office chair is an improved version of the M18 ergonomic office chair. The biggest change of the M57 is that the seat cushion uses a PE polyester mesh, so it is not only soft but also very breathable. The design of the waterfall cushion and the sponge in front of the cushion can effectively relieve the pressure on the thigh and reduce the pain in the thigh. The improved 3D armrest can be moved up and down, front and back, and left and right, so that it can better meet the actual needs of users. In addition, the original design is still retained, the PU casters that do not damage the floor, the adjustable lumbar pillow and other ergonomically designed functions. Furthermore, product warranty period is three years. If there is any quality problem, please contact us. After confirming, we will change the accessory for you. We promise to provide you with zero profit product accessories within three years of the warranty period.

Immerse yourself in unparalleled comfort with the versatile reclining big and tall office chair. Its 90°-135° reclining backrest and adjustable seat height allow you to find the perfect position for working. Sink into the thick sponge padding PU leather, complete with headrest and backrest wings for unparalleled comfort. The ergonomic design includes padded armrests and a retractable footrest, taking your comfort to the next level. Easily engage in conversations from different angles with the swivel seat, while the 5 universal wheels make it easy to move to different rooms. With its heavy-duty SGS gas rod and 5-claw metal base, stability and a substantial 400 lbs load capacity are ensured. The executive chair is the ideal companion for both productive work sessions and refreshing breaks.

SIHOO M59AS Ergonomic Office Chair - Adaptive Support for Work & Leisure. Engineered for versatile use in home offices, gaming setups, studies, and bedrooms, the SIHOO M59AS combines intelligent ergonomic design with all-day comfort. The double-back structure and auto-adjusting lumbar pillow dynamically conform to your spine, while the 3D coordinated armrests rotate and slide to support your arms in any position. Featuring a saddle-shaped seat cushion and durable mesh back, this chair promotes airflow and reduces pressure during extended sitting. With 90° flip-up armrests that tuck neatly under desks, 360° swivel mobility, and quiet wheels that glide across floors, it adapts seamlessly to your space. Certified by BIFMA and SGS to support up to 150kg, this big and tall ready desk chair is built for lasting performance.