heat therapy apparatus; medical cooling apparatus for treating heatstroke; medical ice bags; ice bags for medical use; ice bags for medical purposes; ice bag pillows for medical purposes; medical ice packs; chemically activated cold compresses for medical use; chemically activated cold compresses for medical purposes; compression garments; compression bandages; limb compression instruments; elastic compression bandages for medical purposes; compression sleeves for legs; compression sleeves for knees; knee supports for medical purposes; ankle supports for medical purposes; support bandages; supportive bandages; chemically activated cold gel packs for medical use; chemically activated cold gel packs for medical purposes; personal cooling packs for medical use; personal cooling packs for medical purposes; personal heating packs for medical use; thermal packs for first aid purposes; personal heating packs for medical purposes; chemically activated hot gel packs for medical use; instant heat wraps in the form of chemically activated heat releasing packs for therapeutic use