Features:Comfortable Rolling Stool: The ergonomically-designed round seat stool is here to keep you comfortable thanks to its thick, soft padding and comfy "stool" style design.Adjustable Height: Adjusting the height(from 19'' to 24.8")with the Adjustable hydraulic gas lift.Sturdy Metal Base: Weight Capacity is 250lbs.The base(18.1")is thick and strong, the casters are high quality and durable. 360° Rotatable: The cushion seat and wheels are free to rotate,360° Swivel caster and ultra-quiet wheels allow for easy movement.Wide Used: It is a necessary tool for beauty hair salon,tattoo studio,shop,clinic,lab,home and office. Specification:Color: BlackMaterial: Metal+PU Leather+Nylon Item Weight: 11lbsAdjustable Height: 19'' to 24.8"Seating Diameter: 13.4"Seating Thickness: 3.5"Base Diameter: 18.1"Weight Capacity: 250lbs Note:Please ensure the plastic cap of the gas spring be removed before assembly