The Solo stool is available in four fixed sitting heights of 18 1/8”, 20 1/8”, 24”, and 30” and has 4 foot rings positioned at different heights for use as footrests. These foot rings make the Solo stool easy to be used by students of all heights. This stool can be stacked up to 5 at a time. Four colors (Natural Beech, Light Green, Light Blue and Dark blue) and all 4 heights are available for Quick Ship. Call us at 800-453-4195 to learn more or click “request a quote” and we will contact you for assistance. NOTE: this product is available to shipment to ONLY our California customers.