a glove or glove lining includes a bladder partially filled with a heat - transferring liquid . the bladder is contained within the glove shell and may be bonded to the glove lining . a pocket within the glove and preferably in the wrist area of glove contains an exothermic or endothermic chemical pack . the pocket and chemical pack are sufficiently close to the bladder to heat or cool the liquid in it . the heated or cool liquid is circulated from the wrist area to the fingertips area of the glove by gravity and by natural hand motions of the wearer &# 39 ; s hand . this transfers the heat or coolness of the liquid through the bladder ultimately to the adjoining tissue of the hand .