This heavy duty task chair is perfect for those looking for a robust and comfortable seat with efficient ergonomic support It features a high density foam seat, durable Black Crepe fabric upholstery, and padded arms incorporated in a steel wraparound style construction Its curved ergonomic back provides excellent lumbar support, while its pneumatic gas lift seat allows for easy height adjustment There's also a 2 paddle heavy duty spring mechanism that can be locked in any position within the tilt range