A gel sold as an integral component of finished therapeutic hot and cold compression sleeves for head; A gel sold as an integral component of finished hot and cold compression sleeves for head, wrists, knees, elbows, hamstrings, quads, calf muscles, ankles, arms, and shoulders; A gel sold as an integral component of finished compression body limb garments and sleeves for use in soccer and other sports; A gel sold as an integral component of finished therapeutic hot and cold compression sleeve...