A protector includes a body 100 having a cooling/warming device 1 and a connection device 2 for connecting the protector to a users body. The cooling/warming device 1 includes a water bag 11, a circulation device 12 and a chip 13 (e.g. a Peltier element), wherein the circulation device 12 is connected to the bag 11 and the chip 13. Liquid is received in the water bag 11 and circulates within the circulation device 12, and the chip 13 changes the temperature of the liquid in the circulation device 12. The temperature of the liquid is set to provide cooling or warming features to the muscles of the user's body. There may be a heat dissipating member (3 figure 2) connected to one side of the chip 13, a motor 14, temperature controller 15, temperature detector 16, a circuit unit 17, and a power source 18. There may also be multiple vibration motors 19 and/or an opening (6 figure 10) which may further comprise a zip (7,8 figure 10).
