✓ STURDY REINFORCED CONSTRUCTION FOR DURABILITY ✓ 3"" CUSHIONING FOR EXTRA COMFORT ✓ PNEUMATIC 26"" TO 29"" HEIGHT ADJUSTMENT ACCOMMODATE THE NEEDS OF THOSE WHO ARE TALLER WITH THE INTERION BIG AND TALL STOOL WITH ADJUSTABLE ARMS. THIS STOOL FEATURES ULTRA-THICK 3"" CUSHIONING FOR EXTRA COMFORT AND A 27"" TO 30"" PNEUMATIC HEIGHT ADJUSTMENT. A ROOMY 20"" D X 23"" W SWIVEL SEAT AND 22-1/2"" W X 23""H BACK PROVIDE LUXURIOUS SUPPORT WHILE THE FOUR FOOTREST HEIGHTS HELP USERS CUSTOMIZE THEIR LEG SUPPORT. DURABLE SPIDER BASE WITH GLIDES. T-ARMS ADJUST UP AND DOWN AND IN AND OUT. 2-YEAR LIMITED WARRANTY.