Apollo Mid Back Task Chair combines value, comfort, adjustability and quality to create a perennial favorite. Breathable, mesh back provides increased airflow and maximum comfort for all-day sitting. Ratchet back adjusts up or down relative to the seat for personalized lumbar support and comfort. Tilt-tension control features a recline rate that adapts to your weight. Lockout tilt function prevents tilting. Synchro-tilt mechanism lets the back recline in a preset ratio to the seat for relaxed positioning. Fabric-upholstered, padded, waterfall seat with sloping front reduces pressure on back of knees. Width-adjustable and height-adjustable arms move in or out and up or down for proper ergonomic positioning. Seat-height adjustment sets seat height to your desired position relative to the floor. Chair is Greenguard certified to have low chemical emissions.