【Adaptive Thoracic support】📢- The ergonomic office chair offers passive adaptive thoracic support pads. 【Adjustable 3D Armrests & Headrest】- The home desk chair with adjustable 3D armrests allows you to find the perfect height and angle for arms and shoulders.  【3D Lumbar Support】- The comfortable office chair experiences optimal spinal support with the cotton lumbar cushion, providing maximum comfort. 【Breathable Mesh Back & Breathable Mesh Seat】- To keep you cool, the ergonomic office chair backrest and seat are designed for maximum airflow, woven for strength, and BIFMA tested for durability. 【Premium Quality Assurance & Multi-Surface Casters with Quiet Roll】 【Easy to Install & 3 Years Warranty】