A quick connector coupling comprising: a hollow female connector body having an internal bore defining a longitudinal flow axis, the connector body including an entry end having an entry opening for receiving a male end form introduced axially in a forward insertion direction; a pair of windows defined by the entry end and disposed on opposite lateral sides of the entry end; a retainer member defined by a base and a pair of spaced-apart holding portions extending upwardly from the base, the base disposed below the connector body, the pair of holding portions extending through the windows, wherein the retainer has a nominal shape and is flexible and resilient such that the retainer is biased toward its nominal shape in response to being flexed; a verifier member coupled to the entry end, the verifier including an actuating portion disposed above the entry end of the connector body and the windows, the verifier including a pair of legs extending downwardly from the actuating portions on each side of the entry end and extending into the windows, the verifier including a pair of feet extending inwardly from the bottom of the corresponding legs and into the windows; wherein the verifier is operable between a first position and a second position, the verifier being biased towards the first position; wherein, in the first position, the actuating portion is limited from being moved in a downward direction toward the connector body; wherein, in the second position, the legs and feet are spread laterally outward, and the actuating portion of the actuating portion of the verifier is moveable in a downward direction toward the connector body, wherein the retainer and verifier are coupled to each other, and movement of the retainer causes a corresponding movement of the verifier, characterised in that the retainer includes arm portions extending laterally outward from the holding portions, the arm portions being coupled to the verifier, wherein the actuating portion of the verifier is moveable in a downward direction toward the connector body relative to the arm portions. a hollow female connector body having an internal bore defining a longitudinal flow axis, the connector body including an entry end having an entry opening for receiving a male end form introduced axially in a forward insertion direction; a pair of windows defined by the entry end and disposed on opposite lateral sides of the entry end; a retainer member defined by a base and a pair of spaced-apart holding portions extending upwardly from the base, the base disposed below the connector body, the pair of holding portions extending through the windows, wherein the retainer has a nominal shape and is flexible and resilient such that the retainer is biased toward its nominal shape in response to being flexed; a verifier member coupled to the entry end, the verifier including an actuating portion disposed above the entry end of the connector body and the windows, the verifier including a pair of legs extending downwardly from the actuating portions on each side of the entry end and extending into the windows, the verifier including a pair of feet extending inwardly from the bottom of the corresponding legs and into the windows; wherein the verifier is operable between a first position and a second position, the verifier being biased towards the first position; wherein, in the first position, the actuating portion is limited from being moved in a downward direction toward the connector body; wherein, in the second position, the legs and feet are spread laterally outward, and the actuating portion of the actuating portion of the verifier is moveable in a downward direction toward the connector body, wherein the retainer and verifier are coupled to each other, and movement of the retainer causes a corresponding movement of the verifier, characterised in that the retainer includes arm portions extending laterally outward from the holding portions, the arm portions being coupled to the verifier, wherein the actuating portion of the verifier is moveable in a downward direction toward the connector body relative to the arm portions.