Mid-back task stool with footring is ideal for standing-height workstations & tables. Breathable mesh back & thick foam seat cushioning provide all-day comfort. Polyester seat fabric is abrasion-resistant. Large scale seat & back accommodate a wider variety of users. The waterfall seat edge design helps increase leg circulation, & fixed arms enhance upper body support. Center-tilt mechanism rotates the seat from a point at the center to comfortably recline. Tilt tension controls the rate & ease of recline. Other functions include pneumatic seat-height adjustment from 23-3/4" to 33-1/2" & 360-degree swivel. Stool moves easily on 50mm nylon casters (hard) on the five-star base. Seat measures 19" wide x 18" deep. Back size is 18" wide x 22" high.