Our latest model, the QUERSUS VAOS combines the features of our other two models in a mid-range sized chair. It still comes with all the comfort, the quality and the futuristic look that is our signature. Slightly larger than our smallest Evos chair, suitable for a medium build user or a taller slim user, it retains the multi-position adjustments that ensure the optimum ergonomic position for you to work or play for hours.