Why a Saddle Stool? Because the "Saddle" design helps you keep good posture,ease the stress of your lumbar and neck, save your back from painful because of long-hour works. Why FRNIAMC Saddle Rolling Stool? BECAUSE 1, Luxury Wheel casters, the most popular wheels among whole internet 2, Tall, seat height adjustable with a 9" Vertical range,max height 29.5 inch 3 ,Upgrade quality, FRNIAMC guarantee if any quality problem within 1 year you will get 100% satisfied solution FEATURES: ? Materials: Seat Cushion: Artificial leather 5-Star base: Grade A aluminum Wheels: soft Rubber ? Specifications: Seat Diameter: 15.74*15.74 inch Seat Height adjustable range: 20.5-29.5 inch Base Dimension: 21.5 Inch Weight Capacity: 400-450lbs Applications: Doctor /Artist/Anaesthetic/Massage Therapist/Facial Spa/Bathroom Vanity/Tattoo Studio/Hair Salon/Sewing/Office