Inflatable lumbar pump for personalized back support. Contoured seat evenly distributes body weight to minimize pressure under thighs and help eliminate fatigue. Waterfall seat edge is designed to reduce pressure behind knees. Height-adjustable arms for custom comfort. Recommended Applications: Executive & Management General Office & Task Seat/Back Color: Gray.MLN4019AG2110. 4019AG2110. Mayline Mayline Comfort Series Contoured Support Chair.