INTERION LEATHER STOOL - TASK SYNCHRO MECHANISM - 360 degrees FOOTREST WITH ARMRESTS ADJUSTABLE STOOL BACK AND SEAT ANGLES SYNCHRONIZE TO YOUR BODY'S POSITION FOR DAYLONG COMFORT. PNEUMATIC 24""-29""H ADJUSTABLE SEAT AND 7-1/2""-11""H ADJUSTABLE FOOTREST ENSURE PROPER FOOT AND LEG SUPPORT. ADJUSTABLE STOOL GENEROUSLY SIZED SEAT IS 3-1/2"" THICK PADDING UPHOLSTERED IN GENUINE BLACK LEATHER SEATING SURFACES WITH A WATERFALL EDGE TO REDUCE KNEE STRESS AND IMPROVE CIRCULATION. CONTOURED 2-1/2""H ADJUSTABLE BACK ENSURES IMPROVED POSTURE WITH LUMBAR SUPPORT. 3"" VERTICAL AND 1"" SIDE-TO-SIDE ADJUSTABLE T-ARMS ALIGN ARMS AND WRISTS FOR KEYBOARD USE. POLYPROPYLENE STEEL REINFORCED BASE HAS 2"" CARPET CASTERS. ALL STOOLS INCLUDE A 2 YEAR LIMITED WARRANTY. SEAT MEASURES 18"" SQ. AND BACK MEASURES 17-1/2"" SQ. BRAND IS INTERION BY GLOBAL INDUSTRIAL. EASY ASSEMBLY. ALSO AVAILABLE OPTIONAL STOOL GLIDES CAN REPLACE CASTERS FOR STATIONARY USE.