Standard Options: Tablet Arm (300 lb capacity) Kydex or Solid Maple Tablets 3 Back Styles (Arch Scoop Straight) Wood Base Brushed Aluminum Nave Legs Heavy Duty Casters Recessed Pull Weighted Moisture Barrier TB133 (Fire Barrier) Tamper-proof Fasteners Combinat Features: All Tria Chairs pass 1200 lb drop test / 2000 lb static load Replaceable Components Open Back Clean Out/Closed Back Aesthetic Wear Point Seat Rotation Steel Inner Construction Dymetrol Suspension Sustainable Materials used in frames Solid Hard Wood Feet Blanket-wrapped shipping (no cardboard packaging waste)