This ergonomic high back office chair is expertly engineered for maximum comfort and functionality, delivering unbeatable product practicality for home office and executive workspace, ideal for professionals, remote workers and office staff who sit for long hours. Featuring an back with extra high-density sponge, it provides superior lumbar support that aligns with the body’s natural curve, while the 21"W x 20"D wide seat and 7-13.7" adjustable armrests offer a customized fit for all body types. The seat cushion is crafted with a sturdy wooden board core, soft sponge and highly elastic spring packs, ensuring lasting softness and support that eliminates hip fatigue during prolonged sitting, and the 360° smooth swivel design boosts work efficiency with effortless desk movement. Equipped with universal rubber casters that glide silently and smoothly on wood floors, carpets and marble floors.