TASK STOOL BLACK POLYURETHANE INCREASES EMPLOYEE COMFORT AND PRODUCTIVITY IDEAL FOR REPETITIVE TASK WORK. CONSTRUCTED OF WEAR AND PUNCTURE- BLACK INTEGRAL SKIN URETHANE FOAM. 18""W X 17""D X 1 1/2"" THICK SEAT FEATURES A WATERFALL DESIGN THAT TAKES PRESSURE OFF OF THE KNEES. SEAT HEIGHT ADJUSTS FROM 23"" - 27"" FOR PERSONALIZED POSITIONING. ADJUSTABLE HEIGHT 17""W X 12""H BACK HELPS MAINTAIN A PROPER POSTURE. SPIDER BASE HAS A 22"" DIAMETER AND A 5 FOOTREST POSITIONS. 250 LB CAPACITY. EASY ASSEMBLY. 1 YEAR LIMITED WARRANTY.