A safety cover configured to be coupled to an injection device and provide a protective enclosure for a needle of the injection device, the safety cover comprising: an outer cover member and an inner cover member coupled to one another in a concentric arrangement such that the outer cover member encloses at least a portion of the inner cover member, the outer cover member configured to move relative to the inner cover member from an unlocked position, in which the needle of the delivery device is accessible for use, to a locked position, in which the outer and inner cover members (12, 14) are substantially fixed with one another and the needle of the delivery device is inaccessible; the outer cover member comprising a body including a proximal end, a distal end, and a cavity defined within and being shaped and/or sized to receive a least a portion of the inner cover member within; and the inner cover member comprising a body including a proximal end and a distal end coupled to one another by way of a hinge member, and a cavity defined within and being shaped and/or sized to enclose the needle of the delivery device within when the safety cover is coupled to the delivery device, the inner cover member further comprising a closed position, in which the proximal and distal ends (28, 30) are aligned with one another along a common plane and sharing a common longitudinal axis, and an open position, in which the distal end is bent, via the hinge member, out of plane relative to the proximal end to thereby expose the needle for use when the outer cover member is in the unlocked position; wherein the outer and inner cover members (12, 14) are rotatably coupled to one another such that the outer cover member is configured to rotate relative to the inner cover member from the unlocked position to the locked position while remaining coupled thereto; wherein the inner cover member comprises an opening or port extending along a length thereof from the proximal end towards the distal end, wherein the length of the opening or port generally corresponds to a length of the needle extending within the inner cover member, characterized in that the outer cover member further comprises at least a first recess or aperture defined on a portion thereof; and that the inner cover member further comprises at least a first protrusion extending from an exterior surface thereof and configured to engage the first recess or aperture of the outer cover member when the outer cover member is in a locked position and prevent movement of the outer cover member. an outer cover member and an inner cover member coupled to one another in a concentric arrangement such that the outer cover member encloses at least a portion of the inner cover member, the outer cover member configured to move relative to the inner cover member from an unlocked position, in which the needle of the delivery device is accessible for use, to a locked position, in which the outer and inner cover members (12, 14) are substantially fixed with one another and the needle of the delivery device is inaccessible; the outer cover member comprising a body including a proximal end, a distal end, and a cavity defined within and being shaped and/or sized to receive a least a portion of the inner cover member within; and the inner cover member comprising a body including a proximal end and a distal end coupled to one another by way of a hinge member, and a cavity defined within and being shaped and/or sized to enclose the needle of the delivery device within when the safety cover is coupled to the delivery device, the inner cover member further comprising a closed position, in which the proximal and distal ends (28, 30) are aligned with one another along a common plane and sharing a common longitudinal axis, and an open position, in which the distal end is bent, via the hinge member, out of plane relative to the proximal end to thereby expose the needle for use when the outer cover member is in the unlocked position; wherein the outer and inner cover members (12, 14) are rotatably coupled to one another such that the outer cover member is configured to rotate relative to the inner cover member from the unlocked position to the locked position while remaining coupled thereto; wherein the inner cover member comprises an opening or port extending along a length thereof from the proximal end towards the distal end, wherein the length of the opening or port generally corresponds to a length of the needle extending within the inner cover member, characterized in that the outer cover member further comprises at least a first recess or aperture defined on a portion thereof; and that the inner cover member further comprises at least a first protrusion extending from an exterior surface thereof and configured to engage the first recess or aperture of the outer cover member when the outer cover member is in a locked position and prevent movement of the outer cover member.