A head-and-neck support collar is provided that supports the cervical region of the spine and the base of the skull when the head is in a tilted-back position. The collar is designed to reduce head-and-neck stress, strain and pain during physical activities that require the wearer to look upwards, especially for extended periods of time. The collar includes an elongated neck cushion that is positioned behind the neck of the user. A harness is attached to either end of the elongated neck cushion and is routed over the shoulders, under the arms and across the back. A two part quick release mechanism is provided between the harness and each end of the cushion to facilitate quick and complete release of the cushion from the harness. This quick release mechanism is preferably a hook and loop type fastener.