Herman Miller Classic Aeron Task Chair: Basic - Standard Tilt - Fixed Vinyl Arms - Standard Carpet Casters - Graphite Frame/Carbon Classic Pellicle - Size A (Small) Pellicle Made in USA 12-year Herman Miller warranty with Born-On-Date sticker. The new benchmark in the arena of ergonomic office, seating Basic Model: Non-Adjustable Arms , No Lumbar Support and No Tilt Limiter and Seat Angle Adjustment