Vevor Dental Office Stool with 360° Armrest Rotation 18.9"-24.4" Adjustable Height PU Leather NewThe Vevor dental assistant chair features an ergonomic design that supports the back, waist, and neck to reduce fatigue. Made from durable PU leather with high density foam, it provides optimal comfort. The chair's height is adjustable from 18. 9 to 24. 4 inches, and the 360 rotating armrest backrest adds flexibility. A sturdy five star base with smooth, noise free wheels ensures stability, making it ideal for medical, spa, and educational settings.