A child resistant closure for use on a container, said container having a threaded finish, said child resistant closure comprising: an inner closure member having a threaded portion and an inclined surface, said threaded portion being configured to threadedly engage the threaded finish; a plurality of first engagement features extending from said inner closure member; an outer closure member having a sidewall and a distal end surface, said outer closure member being operably coupled to said inner closure member to permit limited axial translation along an axis between said outer closure member and said inner closure member; a plurality of second engagement features extending from said outer closure member, said outer closure member being positionable in an operationally engaged position wherein said plurality of second engagement features engage said plurality of first engagement features to fix said outer closure member into rotation with said inner closure member, said outer closure member being positionable in an operationally disengaged position wherein said plurality of second engagement features are disengaged from said plurality of first engagement features to permit free rotational movement around said axis of said outer closure relative to said inner closure, movement between said operationally engaged position and said operationally disengaged position being along said axis; and at least one finger spring member being disposed along said distal end surface of said outer closure wherein said at least one finger spring member is directed towards, and contacting, said inclined surface of said inner closure member thereby biasing said outer closure member into said operationally disengaged position; wherein said at least one finger spring member comprises a contact face portion engaging said inner closure member along a first side, characterised in that said at least one finger spring member further comprises a rib portion extending along an opposing second side of said contact face portion, a width of said rib portion being less than a width of said contact face portion thereby forming a T-shaped cross-section, an I-shaped cross-section, or a triangular cross-section. an inner closure member having a threaded portion and an inclined surface, said threaded portion being configured to threadedly engage the threaded finish; a plurality of first engagement features extending from said inner closure member; an outer closure member having a sidewall and a distal end surface, said outer closure member being operably coupled to said inner closure member to permit limited axial translation along an axis between said outer closure member and said inner closure member; a plurality of second engagement features extending from said outer closure member, said outer closure member being positionable in an operationally engaged position wherein said plurality of second engagement features engage said plurality of first engagement features to fix said outer closure member into rotation with said inner closure member, said outer closure member being positionable in an operationally disengaged position wherein said plurality of second engagement features are disengaged from said plurality of first engagement features to permit free rotational movement around said axis of said outer closure relative to said inner closure, movement between said operationally engaged position and said operationally disengaged position being along said axis; and at least one finger spring member being disposed along said distal end surface of said outer closure wherein said at least one finger spring member is directed towards, and contacting, said inclined surface of said inner closure member thereby biasing said outer closure member into said operationally disengaged position; wherein said at least one finger spring member comprises a contact face portion engaging said inner closure member along a first side, characterised in that said at least one finger spring member further comprises a rib portion extending along an opposing second side of said contact face portion, a width of said rib portion being less than a width of said contact face portion thereby forming a T-shaped cross-section, an I-shaped cross-section, or a triangular cross-section.