INTERION LEATHER STOOL - TASK SYNCHRO MECHANISM - 360 degrees FOOTREST ADJUSTABLE STOOL BACK AND SEAT ANGLES SYNCHRONIZE TO YOUR BODY'S POSITION FOR DAYLONG COMFORT. PNEUMATIC 24 TO 29""H ADJUSTABLE SEAT AND 7-1/2 TO 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. 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.