This will expose some of the ice and provide an insulated grip for the ice massaging. Massage the injured area for 5 to 10 minute intervals. Do this for a couple of hours. Do not apply ice any longer than this. Like heat, it will hurt and cause blood vessels to swell.
Some precautions are necessary when treating an injury with ice.
Do not leave ice directly on the skin. Keep it moving or wrap it in a wet towel. To avoid skin damage, stop icing once the skin is numb. Be careful with commercial cold packs. They may be colder than regular ice.