SIHOO M57 Ergonomic Office Chair with 3 Way Armrests Lumbar Support and Adjustable Headrest High Back Tilt Function Black

【Ergonomic Lumbar Support】- The mesh office chair is designed with a double-back structure to support the backrest and lumbar together. Thus, when you lean on the chair, it will offer full support and fit your body. Also, the waterfall shaped cushion reduces stress on your buttocks and thigh, for that truly ergonomic experience.
【Large Seat & High Back】 – This ergonomic chair has an extremely large high-back and wide seat (larger than other standard chairs), suitable for people about 5’8″ to 6’4″. The whole chair measures about 18.9″W x 29.5″D x 45.7″-51.2″H, the seat size: 18.9″W x 17.9″D x 17.7″-21.6″H, the whole back size: 21.7″L x 18.9″W, with a loading capacity of up to 300 lbs.
【Breathable Mesh & Tilt Back】 – You can tilt the chair back and lock it at 3 different positions for that unique stress-free experience on your back. Unique mesh design to keep the air circulation going and the high-quality mesh resists abrasion and transformation, so that you can sit on the rolling task chair for 8 hours or more. Also, the mesh task chair is easy to clean, so that you do not have to spend more time on cleaning.