Salli Twin Saddle Seat Patented split-seat saddle design cools and relieves pressures for improved genital health in both women and men. Heavy duty 3mm steel seat plate covered with high quality contouring foam in your choice of color leather. Large 65mm casters for easy maneuverability on carpet or hard floors. Optional deep pile, braking, locking, cleanable (barber) and industial casters also available. Medium fits 5'1" to 6'1" (Seat height 22.5"-30"), short and tall poles also available Ten (10) years warranty for the seat component. Five (5) years for casters, tilt mechanisms, lift, base, back support, and elbow supports.