The Flavors® seat back provides support and allows the student to turn with less restriction. The flat seat pan’s waterfall front edge provides exceptional comfort. Flavors® student chairs are constructed from high-density polypropylene with 18 color selections. - The Flavors® Adjustable “A” Shell (Models 11840 & 11841): – 25″ diameter five-star base in Black only. – Pneumatic gas lift adjusts chair from 16″ to 21″ in height, with the pull of a handle. - The Flavors® Adjustable “B” Shell (Models 11830 & 11831): – 22″ diameter five-star base in Black only. – Pneumatic gas lift adjusts chair from 14″ to 16″ in height, with the pull of a handle. (B Shell gas lift is specifically designed for Elementary use, grades 1-5 – less weight is required to activate the mechanism). The Flavors® Adjustable Chair combines flexibility with maneuverability, which makes it an essential piece of computer lab furniture. The Adjustable Chair utilizes a Graduated Movement Concept, which states that classroom chairs should allow for comfortable movement in multiple directions. The chair’s main feature is a gas lift adjustable base which allows it to change heights (14″-16″h and 16″-21″h). The Adjustable Chair features 5 swivel casters for smooth maneuverability across various surfaces.