The Flavors® Mobile Stack student chair is available in either a 14″ or 16″ ‘B-Shell’ as well as an 18″ ‘A-Shell.’ The four-position chair allows student to sit comfortably facing front, either side or rear. A flexing seat back provides support and allows student to turn with less restriction. Mobile stack chair is standard with smooth rolling casters. Flat seat pan with waterfall front edge. Available in 18 colors, frame in Chrome and Platinum.The Mobile Stack Chair has a comfortable seat that promotes proper posture while the back of the chair is capable of adapting to various sitting positions. This flexibility is part of the Graduated Movement Concept, which enables different ways of working and sitting without forcing the body to conform. This concept is featured in all Flavors® school chairs, but the Mobile Stack Chair differs in its ability to maximize movement. Not only is the chair itself flexible, it sits atop four durable swivel casters for smooth maneuverability across various surfaces.