Adjustable Foot Ring: This high office chair has a height-adjustable footrest, which is ideal for standing desk and provide a feet rest support to relax your legs. The seat height can be adjusted from 25.79" to 34.25" to meet your different needs. It also can be used as a draft table chair, sit stand chair, draft chair, bar level office chair,drawing table chair, etc. Built for Comfort: Let this ergonomic high stool rolling chair bring your workday to a new heights. We insist on breathable mesh material and upholstered Seat to promote air circulation, allowing you to sit cozily for long hours to prevent accumulation of heat and humidity even in hot weather. Built-in lumbar support helps prevent back strain and muscle fatigue. Flexible and Easy to Move: Black stool chair on casters with arms has 360 degree roll wheels swivel function, that provides freedom of movement and convenience to communicate with others when rolling it in any direction. 5 universal soft PU material casters protect your favorite hardwood floor, carpets and other mats, ensuring smooth and quiet moving on any surface.