Abstract: A cooling and warming garment assembly for cooling and warming a user includes a hat that is configured to position on a head of a user and a vest that is configured to position over a torso of the user. A first sleeve is reversibly couplable to the hat and positionable adjacent to a neck of the user. A gel is positioned in an interior defined by the first sleeve. The gel is configured to be chilled prior to coupling of the first sleeve to the hat. A plurality of pouches is coupled to the vest. Each of a plurality of packets is substantially complementary to and selectively insertable into a respective pouch. The packets are configured to be chilled prior to insertion into the pouches. The gel is configured to cool the neck of the user and the packets are configured to cool the torso of the user.