Height Adjustable Drafting Chair with Flip Up Arms-BlackFlip up armrest allows you to adjust it up and down to accommodate sitting posture Ergonomic backrest fits well with back curve and thus alleviates fatigue Adjustable foot ring can be lifted up and down to rest your feet at an appropriate height Designed with an adjustable lumbar support to fulfill the requirements of different people Breathable mesh fabric makes the chair for all seasons especially in particular hot season High density sponge cushion