The unibody head gear personal temperature moderating device has the form of a baseball cap or beanie or helmet which is itself constructed from a thermal retention pack or packs. The thermal retention pack or packs constitute the inner and outer walls of the baseball cap or beanie or helmet while the cooling or warming gel resides between the inner and outer walls. The inner wall of the thermal retention packs is the surface which comes in contact with the wearers head. The outer wall of the thermal retention pack or packs constitutes the exterior of the head apparel. The entire baseball cap or beanie or helmet may be placed in a freezer or warmer to thermally charge it for use.
