Ice packs for the treatment of injuries; Heat pads for therapeutic treatment; Medical ice packs; Chemically activated cold compresses for medical use; Chemically activated cold gel packs for medical use; Chemically activated heating pads for medical purposes; Chemically activated hot compresses for medical use; Chemically activated hot gel packs for medical use; Cold packs for medical purposes; Cooling pads for first aid purposes; Thermal packs for first aid purposes