Abstract: The present invention relates to a modular chair comprising: a seat assembly, where the seat assembly includes a seat member, a back member, and an adjustable leg support extending from the seat member; and a leg assembly, where the leg assembly attaches to the seat assembly, said leg assembly includes a pair of front legs and a pair of hind legs, where said pair of hind legs includes a mechanism to vertically adjust the height of the hind legs. In one particular embodiment, the vertical adjusting mechanism includes a hollow tubular structure configured to receive a pair of extension members, a first extension member and a second extension member.