GREEN BRAND ActiKine Hot/cold ball tablets Flexible Reusable Ergonomic 10x15cm Hot and cold therapy Medical device 1 unit Mutlizone small hot/cold compress: flexible, reusable, hot and cold therapy, microwave or water bath Cold: helps reduce body temperature and pain. Cold applications: sprains, tendinitis, strains, muscle strains, strains, small burns, bumps and bruises, headaches and migraines, nosebleeds, dental inflammation, tennis elbow, stings and insect bites. Warm: helps improve blood circulation and relieve fatigue. Hot uses: warming cold hands and feet, rheumatism and arthritis, muscle stiffness, lumbago and back pain, menstrual pain, neck pain and stiff neck.