Relieve lower body stress and achieve proper posture with our Series 400 Classic ergonomic stool. This sit-to-stand stool is designed for maximum comfort and relief for those who work in industries requiring long periods of sitting and attention to detail. The Series 400 Classic saddle makes for an excellent ergonomic saddle stool sufficiently suiting the needs of designers and engineers spending extended hours in the seated position. Each stool is custom made to order. Choose to add memory foam or serene gel foam before checkout, plus select from a wide variety of modern colors! Enjoy fast shipping, too! All features listed below.