Humanscale Diffrient World Task Chair: Adjustable Duron Arms - Standard Height Cylinder - Standard Carpet Casters - Black Frame/Platinum Dash Seat Mechanism-free recline action provides automatic, balanced support at all points throughout recline Form-Sensing Mesh Technology features tri-panel, non-stretch mesh construction for body-hugging comfort Low-abrasion mesh protects clothing while providing ultimate breathability A high quality, affordable task chair with minimal parts Warranty: Textiles & Mesh  5 years of single shift use; All other components  15 years 24/7 use Warranty: Textiles & Mesh  5 years of single shift use; All other components  15 years 24/7 use