A bath ring is provided including a base portion, a ring portion having a back portion for supporting the back of a person seated on the base portion, an attachment member connecting the ring portion to the base portion, and a restraining member extending upwardly from a front edge of the base portion. The restraining member has a first portion pivotable about the base portion, and a second portion having a pair of distal ends. A lock mechanism associated with the first and second portions of the restraining member is adapted to engage with and disengage from a pair of slots located in an inwardly facing surface of the ring portion. The lock mechanism includes a first element with a pair of oppositely extending arm members and a central member from which each arm member extends, wherein the central member is compressible so that the arm members may be brought closer together, and a second element extending along the first portion of the retaining member. The first and second elements of the lock mechanism are located in adjoining relation so that the central member of the first element is compressed as the second element is moved upwardly.