Feature ● For single use only● Includes soft coverings● can release heat within 5 seconds● helps expedite blood blow● promote the healing of injured areaConditions: ● stiff necks ● backaches ● headaches ● sports injuries● lunchboxDirection for use: 1.Squeeze pack to break inner pouch2.Shake to mix contents3.Insert pack into soft covering provided4.Apply to affected area for up to 20 minutes. Discard pack after treatment Website: