SIHOO focuses on the field of ergonomics, our ergonomic office chairs are designed with fashionable modern office chair to sit health life as design purposes, scientifically measure health and comfortable seats, provide you with a comfortable, reasonable, scientific Health sitting posture experience. Height-Adjustable Standing Desk -NEW Ergonomic technology pioneer of the year, multi-functional adjustment The first ergonomic office chair exclusively for you Visit the Store SIHOO is a professional ergonomic office furniture supplier. With innovative design, independent production and the latest sales channels, our ergonomic office chairs are designed with stylish and modern office chairs, which can provide you with a comfortable, reasonable and scientific healthy sitting experience. If SIHOO office chair is free to return within 30 days. And we promise to provide zero-profit product parts during the three-year period. If you meet any problems, find us, and we will provide you with satisfactory solutions. A 10° pivot for a closer fit The spring-loaded lumbar cushion offers a wider range of motion, following pressure points to contour against your sides and provide targeted support. Enhanced elasticity, superior support Sihoo M59AS’s dynamic lumbar support features a 30 mm fore-and-aft adjustment to ensure consistent lower-back support whether you’re sitting upright or reclining. Highly elastic cushioning for a more relaxed recline The dual-spring lumbar support absorbs rearward impact and reduces pressure on your lumbar spine, while its soft, responsive action gently yet securely cradles your lower back. The 3D dual-joint headrest delivers exceptional adjustability across a wide range. It accommodates varied heights and seating postures. With 11 cm of height adjustment, 25° of tilt, and 45° of forward-and-back swivel, it provides truly personalized support. SIHOO M59AS SIHOO M57 SIHOO M18 SIHOO Doro C300 SIHOO Doro S100 SIHOO M102 SIHOO M56C