General description SIHOO Doro C300 ergonomic office chair combines the latest technologies to help you maintain a comfortable posture and live a healthy lifestyle. This desk chair features an adjustable headrest, self-adaptive lumbar support, ultra-soft 3D armrests, a smart weight-sensing mechanism, durable and silent chair wheels, a flexible backrest, and a fully breathable mesh design, offering lasting comfort even after all-day sitting. Technical specifications Weight capacity: up to 150 kg Backrest adjustment: four-position adjustment with 6 cm (2.36") of up and down movement Reclining angles: 110°, 120°, and 130° Other information Holds 12 patents Passes EU's REACH and EN1335 standards German TUV certification for safety and quality Complies with US SGS BIFMA standards Features a class 4 SGS-certified gas lift