The Millennial Modern Home Office Chair in black is made with CaressoftPlus material. CaressoftPlus is a trademarked vinyl that is an ultra-soft, breathable upholstery that looks & feels like leather, but more durable & easy to clean. The 27 inch chair base is designed with fancy high crown chrome and has 2 inch nylon dual wheel castors for smooth rolling. The chair has a 275 lbs. weight limit in addition to offering tilt tension, a pneumatic gas lift and an upright lock.