A protector includes a body having a cooling/warming device and a connection device. The cooling/warming device includes a bag, a circulation device and a chip, wherein the circulation device is connected to the bag and the chip. Liquid is received in the water bag and circulates within the circulation device, and the chip changes the temperature of the liquid in the circulation device. The connection device is easily attached to the users body and the temperature of the liquid is set to provide cooling or warming features to the muscles of the users body.
