Scopinich. Carefully designed to be the most popular lightweight chair on the market to accommodate the smaller cockpits with unlimited class rating. Features 21 x 21 Fiberglass seat. Anodized 6061 marine grade billet aluminum hardware- double side gimbals- 3-1/2 outer diameter pedestal and deck plate- four position reversible flip gimbal. Legs will not extend beyond the back of the chair. SHIPPING CHARGES ARE NOT INCLUDED.