Cura-Heat Neck & Shoulder Pain Direct to Skin can be applied directly to the skin for those who prefer direct skin application heat therapy. The flexible contouring heat patches deliver 8 hours of soothing heat and provide targeted, temporary warming relief to painful and stiff areas of the neck/ shoulder and can also be used on the wrist area. Just open the sachet, unfold the heat patch and apply directly to the skin over the painful area where the heat will increase blood circulation, decrease stiffness and relax sore muscles, Fragrance free, non-medicinal and with a thin discreet design they are ideal to use anywhere.